Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
What changed
Source
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Round

Round 1

Round 1

Did not identify Eyebrow after 40 counted questions.

Back to all Eyebrow rounds
Questions
40 Scored as 41
Outcome
Question limit reached
Format errors
No errors
Duration
9m 37s
Round cost
$0.1662 All 41 turns

Transcript

Questions and answers.

Turns are shown in the order they happened. Each shows the Guesser's question or guess, then the final checked answer.

Exact Guesser setupSystem message and BEGIN event

The Guesser received these messages at the start of the round. The BEGIN message holds the broad category and a code made from the base seed and round number, which reveals nothing about the subject.

System message
You are the Guesser in a Twenty Questions benchmark. Identify the hidden subject using as few
counted turns as possible. BEGIN provides only its broad category. The variation_token has no
clues; do not interpret, mention, or repeat it.

The category in BEGIN has a broad meaning:
- person: a real human, living or historical.
- fictional_character: an invented character from a story, book, comic, film, television,
  game, or another fictional work.
- mythological_figure: a figure from mythology or traditional legend.
- video_game_character: a character known from video games.
- thing: a broad category covering natural and human-made entities, living or nonliving,
  whole entities or parts of them. Possibilities include everyday objects, tools, machines,
  materials, food, animals, plants, body parts, natural structures, geographical features,
  celestial bodies, natural phenomena, and concepts. These possibilities are not exhaustive.
  The target may be a general kind or one particular instance.

Use questions to narrow the supplied category. These definitions are not a list of targets.

Use ASK for a factual question that distinguishes candidates. Never use ASK to confirm a
specific identity. Use GUESS with a name and short identifying description to name a candidate.

ASK has five possible replies:
- YES or NO: the evidence establishes that answer to the exact question.
- RATHER_YES or RATHER_NO: evidence leans that way, but is not strong enough for a firm answer.
  Treat this as a clue; keep candidates fitting the opposite answer possible.
- UNKNOWN: no reliable direction. It supports neither answer.

Ask clear questions about verifiable properties. "Can", "sometimes", "usually", "always", and
"mainly" ask different things. Do not assume that one property proves another or rules out alternatives.
Qualified replies express uncertainty about your question, not how often a property applies.
Before narrowing heavily, check your key assumption with a different property. After rejected
guesses, reconsider earlier assumptions as well as candidates. Answers can be mistaken; check
another property when stuck. Do not ignore an answer merely because it conflicts with a
preferred candidate.

Each ASK, rejected GUESS, or format error before the limit costs one turn. A correct GUESS costs
none. After 40 counted turns, make one final GUESS; ASK is then forbidden. Identity
validation uses only YES, NO, or UNKNOWN. UNKNOWN on GUESS ends the game without success.

FORMAT_ERROR means your output broke the contract, was not checked for correctness, and cost
one turn. Retry using its displayed formats if a turn remains. Return only the required JSON
object with exactly one result action. No explanations, reasoning, or extra fields.
BEGIN event
{"category":"thing","event":"BEGIN","variation_token":"EAQCORIU"}

Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.

Q1
1 · Guesser asks

Is the subject a living organism?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a living organism?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The article describes eyebrow hair and its follicles, including their structure, growth, and cycling, treating them as hair associated with an anatomical feature rather than as an organism.

Open pubmed.ncbi.nlm.nih.gov
2 · Answer check returns No
Q2
1 · Guesser asks

Is it primarily a human-made object or artifact?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily a human-made object or artifact?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The source describes the eyebrow as an area of thick, short hairs above the eye and identifies eyebrows among the accessory visual structures that help protect the eye.

Open en.wikipedia.org
2 · Answer check returns No
Q3
1 · Guesser asks

Does the subject occur naturally on Earth?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject occur naturally on Earth?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
As humans have evolved, our body hair and facial hair have diminished over time. But eyebrows and eyelashes remained a core part of our features.
Open aao.org
2 · Answer check returns Yes
Q4
1 · Guesser asks

Is the subject a physical object or substance, rather than an event, process, or abstract concept?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a physical object or substance, rather than an event, process, or abstract concept?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q5
1 · Guesser asks

Is it primarily made of solid mineral or rock material?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily made of solid mineral or rock material?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q6
1 · Guesser asks

Is the subject primarily a liquid substance under ordinary conditions on Earth?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily a liquid substance under ordinary conditions on Earth?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
The eyebrows consist of serial arched rows (5–7 rows) of hair growing along the superior orbital margin. The eyebrows hair are short, thin but stiff, nonpliable with a slight curve along the body.
Open pmc.ncbi.nlm.nih.gov
Source 03
The hair shaft is mainly composed of keratin, a strong and insoluble protein. Approximately 65–95% of the hair is composed of keratin in combination with other proteins, water, lipids, pigments and other trace elements.
Open sciencedirect.com
2 · Answer check returns No
Q7
1 · Guesser asks

Is the subject primarily a gas under ordinary conditions on Earth?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily a gas under ordinary conditions on Earth?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
The Eyebrows (supercilia) are two arched eminences of integument, which surmount the upper circumference of the orbits, and support numerous short, thick hairs, directed obliquely on the surface.
Open imaios.com
2 · Answer check returns No
Q8
1 · Guesser asks

Is the subject composed primarily of water, including water in a solid form such as ice or snow?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject composed primarily of water, including water in a solid form such as ice or snow?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

Human hair consists of 65–95 wt% proteins. Keratin is a family of structural proteins abundant in human hair, and hair is chemically mainly composed of keratins.

Open sciencedirect.com
Source 03

Source summary (model-reported)

The article reviews the structure and function of eyebrow hair follicles and states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body.

Open pubmed.ncbi.nlm.nih.gov
2 · Answer check returns No
Q9
1 · Guesser asks

Is the subject currently or formerly part of a living organism, such as wood, bone, or a shell?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject currently or formerly part of a living organism, such as wood, bone, or a shell?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q10
1 · Guesser asks

Is the subject derived from an animal rather than from a plant or fungus?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject derived from an animal rather than from a plant or fungus?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The article is titled “The biology, structure, and function of eyebrow hair” and states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body.

Open pubmed.ncbi.nlm.nih.gov
Source 02

Source summary (model-reported)

The source discusses human hair follicles and states that humans have hair follicles across most of the body, with terminal hairs present in restricted sites including the eyebrow region on the face.

Open pmc.ncbi.nlm.nih.gov
2 · Answer check returns Yes
Q11
1 · Guesser asks

Is the subject a hard, rigid biological material, such as bone, tooth, shell, or antler?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a hard, rigid biological material, such as bone, tooth, shell, or antler?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The effects of strain rate, relative humidity, and temperature are evaluated. Hair exhibits a high tensile strength... The effects of ... ductility of hair are evaluated.

Open sciencedirect.com
Source 03

Source summary (model-reported)

The supplied subject description identifies the target as the human eyebrow, an anatomical feature formed by an area of short hairs above a human eye, rather than an isolated hair or another object.

Open en.wikipedia.org
2 · Answer check returns No
Q12
1 · Guesser asks

Is it a soft or flexible material that commonly forms part of an animal’s outer covering, such as hair, fur, feathers, or skin?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a soft or flexible material that commonly forms part of an animal’s outer covering, such as hair, fur, feathers, or skin?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q13
1 · Guesser asks

Is the subject commonly used as food by humans?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject commonly used as food by humans?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
Eyebrows act as a barrier, diverting moisture away from the eyes ... and capturing small particles before they reach the eye. Moreover, eyebrows can shield the eyes from the glare of the sun.
Open britannica.com
Source 03

Source summary (model-reported)

Eyebrows help to prevent debris, sweat, and water from falling into the eye socket, and they also play a role in human social communication.

Open sapiens.org
2 · Answer check returns No
Q14
1 · Guesser asks

Is the subject a bodily fluid or secretion produced by an animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a bodily fluid or secretion produced by an animal?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The American Academy of Ophthalmology describes eyebrows as curved, delicate hairs above the eyes and explains that they can channel moisture such as sweat and rain away from the eyes.

Open aao.org
2 · Answer check returns No
Q15
1 · Guesser asks

Is the subject a material produced by an animal, rather than a tissue or body part of an animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a material produced by an animal, rather than a tissue or body part of an animal?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q16
1 · Guesser asks

Is the subject an internal organ or internal body tissue of an animal, rather than an external body part?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject an internal organ or internal body tissue of an animal, rather than an external body part?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The source describes the eyebrow as “an area of coarse skin hairs above the eye that follows the shape of the brow ridges.”

Open wikidoc.org
2 · Answer check returns No
Q17
1 · Guesser asks

Is the subject the remains or body of an entire animal, rather than a particular part or material from one?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject the remains or body of an entire animal, rather than a particular part or material from one?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q18
1 · Guesser asks

Is the subject an external anatomical body part of an animal, such as a limb, wing, fin, tail, or eye?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject an external anatomical body part of an animal, such as a limb, wing, fin, tail, or eye?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q19
1 · Guesser asks

Is it an external body part of a vertebrate animal, such as a limb, wing, fin, tail, or eye?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an external body part of a vertebrate animal, such as a limb, wing, fin, tail, or eye?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q20
1 · Guesser asks

Is the subject primarily used by the animal for locomotion, such as a leg, wing, or fin?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily used by the animal for locomotion, such as a leg, wing, or fin?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Eyebrows act as a barrier, diverting moisture away from the eyes toward the sides of the face... eyebrows can shield the eyes from the glare of the sun... Beyond their protective function, eyebrows are also great for nonverbal communication.

Open britannica.com
Source 02

Source summary (model-reported)

The main function of the eyebrows is to prevent moisture, mostly salty sweat and rain, from flowing into the eye... Together with the eyebrows, the brow ridges also shade the eyes from sunlight.

Open wikidoc.org
2 · Answer check returns No
Q21
1 · Guesser asks

Is the subject primarily a sensory organ or sensory structure, such as an eye, ear, or nostril?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily a sensory organ or sensory structure, such as an eye, ear, or nostril?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The Eyebrows (supercilia) are two arched eminences of integument, which surmount the upper circumference of the orbits, and support numerous short, thick hairs, directed obliquely on the surface. The eyebrows consist of thickened integument...

Open imaios.com
Source 02

Source summary (model-reported)

The main function of the eyebrows is to prevent moisture, mostly salty sweat and rain, from flowing into the eye... Together with the eyebrows, the brow ridges also shade the eyes from sunlight.

Open wikidoc.org
Source 03

Source summary (model-reported)

The eyebrows form a critical landmark of the upper facial appearance... Brow position and contour convey emotion and feeling and comprise an important part of body language.

Open entokey.com
2 · Answer check returns No
Q22
1 · Guesser asks

Is the subject primarily involved in obtaining or processing food, such as a mouth, jaw, beak, or tongue?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily involved in obtaining or processing food, such as a mouth, jaw, beak, or tongue?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01
In humans, eyebrows serve two main functions: first, communication through facial expression, and second, prevention of sweat, water, and other debris from falling down into the eye socket.
Open kiwi.itspektar.net
Source 02

Source summary (model-reported)

Eyebrows act as a barrier, diverting moisture away from the eyes toward the sides of the face through their shape and the direction of their hairs and capturing small particles before they reach the eye. Beyond their protective function, eyebrows are also important for nonverbal communication.

Open britannica.com
2 · Answer check returns No
Q23
1 · Guesser asks

Is the subject located at or near the rear end of the animal, such as a tail or an external reproductive structure?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located at or near the rear end of the animal, such as a tail or an external reproductive structure?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q24
1 · Guesser asks

Is the subject a body part located on an animal’s head, such as a horn, crest, or jaw?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a body part located on an animal’s head, such as a horn, crest, or jaw?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q25
1 · Guesser asks

Is the subject a body part found on a bird, such as a crest, comb, or wattle?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a body part found on a bird, such as a crest, comb, or wattle?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q26
1 · Guesser asks

Is the subject a body part found on a mammal, such as a horn, antler, snout, or whisker?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a body part found on a mammal, such as a horn, antler, snout, or whisker?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

The entry defines eyebrows as “the curved areas of hair on your face above each of your eyes” and classifies an eyebrow as a type of hair, a covering for the body or parts of it.

Open vocabulary.com
2 · Answer check returns Yes
Q27
1 · Guesser asks

Is the subject a prominent protruding feature of a mammal’s head, such as a snout, horn, or tusk?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a prominent protruding feature of a mammal’s head, such as a snout, horn, or tusk?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q28
1 · Guesser asks

Is the subject a broad anatomical region of a mammal’s head or face, rather than a distinct appendage or projection?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a broad anatomical region of a mammal’s head or face, rather than a distinct appendage or projection?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

Merriam-Webster's medical definition describes an eyebrow as “the ridge over the eye or the hair growing usually in a line or arch on the skin over it.”

Open merriam-webster.com
2 · Answer check returns No
Q29
1 · Guesser asks

Does the subject help protect an opening or delicate structure on a mammal’s head, such as an eyelid, eyelash, or nostril flap?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject help protect an opening or delicate structure on a mammal’s head, such as an eyelid, eyelash, or nostril flap?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Britannica states that eyebrows act as a barrier, diverting moisture away from the eyes and capturing small particles before they reach the eye. It also describes their protective role against glare, dust, dirt, sweat, and rain.

Open britannica.com
Source 02

Source summary (model-reported)

The page identifies the eyebrow as an accessory visual structure and states that its main function is to prevent sweat, water, and other debris from falling into the eye. It describes the eyebrow, eyelids, and eyelashes as structures involved in eye protection.

Open en.wikipedia.org
2 · Answer check returns Yes
Q30
1 · Guesser asks

Does the subject primarily protect the eye of a mammal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject primarily protect the eye of a mammal?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Eyebrows act as a barrier, diverting moisture away from the eyes toward the sides of the face through their shape and the direction of their hairs and capturing small particles before they reach the eye. Moreover, eyebrows can shield the eyes from the glare of…

Open britannica.com
Source 02
The main function of the eyebrows is to prevent moisture, mostly salty sweat and rain, from flowing into the eye. Together with the eyebrows, the brow ridges also shade the eyes from sunlight.
Open wikidoc.org
2 · Answer check returns Yes
Q31
1 · Guesser asks

Is it a movable fold of skin that covers and protects the eye, rather than a fringe of hairs?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a movable fold of skin that covers and protects the eye, rather than a fringe of hairs?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q32
1 · Guesser guesses

eyelash

A fringe of hairs on a mammal’s eyelid that helps protect the eye.

Validator rationale An eyelash is a different anatomical feature from an eyebrow; it is located on the eyelid rather than above the eye.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"A fringe of hairs on a mammal’s eyelid that helps protect the eye.","name":"eyelash","question":null}}
2 · Validator returns No
Q33
1 · Guesser asks

Is the subject a band or tuft of hair located above a mammal’s eye, commonly called an eyebrow?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a band or tuft of hair located above a mammal’s eye, commonly called an eyebrow?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 03

Source summary (model-reported)

The page reports dictionary definitions including “The arch of short hairs covering this ridge,” “The brow or hairy arch above the eye,” and “the arch of hair above each eye.”

Open wordnik.com
2 · Answer check returns Yes
Q34
1 · Guesser guesses

eyebrow

A band of hair above a mammal's eye that helps protect it from sweat and debris.

Validator rationale The target is specifically the human eyebrow, while the proposal describes an eyebrow of any mammal, including nonhuman animals, so it does not satisfy the explicit human restriction.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"A band of hair above a mammal's eye that helps protect it from sweat and debris.","name":"eyebrow","question":null}}
2 · Validator returns No
Q35
1 · Guesser asks

Is the subject a rigid bony ridge above or around a mammal’s eye, such as the brow ridge or supraorbital ridge?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a rigid bony ridge above or around a mammal’s eye, such as the brow ridge or supraorbital ridge?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q36
1 · Guesser asks

Is the subject a translucent third eyelid, or nictitating membrane, found in some mammals and drawn across the eye?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a translucent third eyelid, or nictitating membrane, found in some mammals and drawn across the eye?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
The nictitating membrane is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for protection and to moisten it while maintaining vision.
Open en.wikipedia.org
2 · Answer check returns No
Q37
1 · Guesser asks

Is the subject a hair-like sensory structure on a mammal’s face, such as a whisker or vibrissa?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a hair-like sensory structure on a mammal’s face, such as a whisker or vibrissa?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
Vibrissae are hairs that are specialized for sensory functions. most notably the face ・ humans lack vibrissae. A whisker or vibrissa is a large tactile hair in a mechanically isolated hair follicle.
Open sciencedirect.com
Source 03
The area of curved, delicate hairs above our eyes are believed to channel unwanted moisture—sweat and rain in particular—away from the eye ... They also help to block out light and filter dust and dirt that may fall into the eyes.
Open aao.org
2 · Answer check returns No
Q38
1 · Guesser asks

Is the subject composed primarily of hair, rather than skin, muscle, bone, or membrane?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject composed primarily of hair, rather than skin, muscle, bone, or membrane?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

This anatomy reference describes the eyebrows as “arched eminences of integument” that support numerous short, thick hairs, and says they are connected beneath with several muscles.

Open imaios.com
2 · Answer check returns Unknown
Q39
1 · Guesser asks

Does the subject move to close over the eye and thereby reduce exposure to light, dust, or injury?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject move to close over the eye and thereby reduce exposure to light, dust, or injury?"}}
Oracle evidence1 model-reported source

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The eyebrows prevent sweat from getting into the eyes and, when we frown in bright light, protrude forward by approximately 6 mm, creating shadows in the eyes. The eyelids are above and below the eyes, covering the eyeballs. By closing and opening, the eyelids regulate the amount of light that enters the eye while also protecting it from foreign substances.

Open nidek-intl.com
2 · Answer check returns No
Q40
1 · Guesser asks

Is the subject a bony cavity or socket that surrounds and protects a mammal’s eye?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a bony cavity or socket that surrounds and protects a mammal’s eye?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The eyebrow is an area of thick, short hairs above the eye. The main function is to prevent sweat, water, and other debris falling into the eye.

Open en.wikipedia.org
Source 03
The orbital cavity, commonly known as the eye socket, is a deep and bony pyramid-shaped space in the skull that houses and protects the eyeball.
Open lens.com
2 · Answer check returns No
G
1 · Guesser guessesNot counted

eyelid

A mammal’s movable fold of skin that covers and protects the eye.

Validator rationale The proposal identifies an eyelid, which is a different anatomical feature from an eyebrow.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"A mammal’s movable fold of skin that covers and protects the eye.","name":"eyelid","question":null}}
2 · Validator returns No