Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

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

Round 2

Round 2

Did not identify Eyebrow after 40 counted questions.

Back to all Eyebrow rounds
Questions
40 Scored as 41
Outcome
Too many format errors
Format errors
Errors found View one example
Duration
7m 24s
Round cost
$0.2557 All 41 turns

Format warning

The model sent replies in the wrong format.

The Guesser sent 8 invalid replies. Each one before the question limit used up a counted turn. The model was only reminded of the required format; it was never told whether its question or guess was correct.

Valid format
80.5%
Format errors
8
Turns used by format errors
7

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":"BKXG3AZI"}

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

4 of 31 answers in this round reuse an earlier, fully checked answer with its original evidence. No new search or check ran for those turns.

Q1
1 · Guesser asks

Is the subject a tangible physical object that can be touched?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a tangible physical object that can be touched?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q2
1 · Guesser asks

Is the subject a man‑made object?

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

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

2 · Answer check returns No
Q3
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 evidence3 model-reported sources

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

Source 02

Source summary (model-reported)

Eyebrow hair serves many important biologic and aesthetic functions. This article reviews the structure and function of the hair follicle, as well as hair follicle morphogenesis and cycling.

Open pubmed.ncbi.nlm.nih.gov
2 · Answer check returns No
Q4
1 · Guesser asks

Is the subject a mountain?

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

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

2 · Answer check returns No
Q5
1 · Guesser asks

Is the subject a body of water?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a body of water?"}}
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 a type of rock?

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

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

Source 02

Source summary (model-reported)

The British Geological Survey states: “A rock is a solid collection of minerals,” and explains that rocks are generally made up of two or more minerals formed through geological processes.

Open bgs.ac.uk
2 · Answer check returns No
Q7
1 · Guesser asks

Is the subject a mineral?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a mineral?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q8
1 · Guesser asks

Is the subject primarily composed of water (in any state)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily composed of water (in any state)?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q9
1 · Guesser asks

Is the subject typically spherical in shape?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically spherical in shape?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

The literature describes eyebrow shape using terms such as flatter, lateral curvature, arch, and club-shaped medial portion, and notes great variety in eyebrow shape and position.

Open researchgate.net
2 · Answer check returns No
Q10
1 · Guesser asks

Is the subject primarily composed of organic material?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily composed of organic material?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q11
1 · Guesser asks

Is the subject derived from a plant?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject derived from a plant?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q12
1 · Guesser asks

Is the subject derived from an animal?

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

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

Source 01

Source summary (model-reported)

The human eyebrow, with its contrasting hair, accentuates the movement of the brow... Eyebrows, the strip of thick, delicate hairs following the brow ridge above the eye, are an absolute difference between humans and non-human primates.

Open carta.anthropogeny.org
2 · Answer check returns Unknown
Q13
1 · Guesser asks

Is the subject a part of an animal’s body?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a part of an animal’s body?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q14
1 · Guesser asks

Is the subject primarily found on birds?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily found on birds?"}}
Oracle evidence3 model-reported sources

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

Source 03
Some bird species have what is technically called a supercilium. This is a stripe which starts close to the back end of the bill, runs just above the eye, and ends towards the back of the head. It can be thought of as an “eyebrow”.
Open thebdi.org
2 · Answer check returns No
Q15
1 · Guesser asks

Is the subject primarily composed of keratin?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily composed of keratin?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q16
1 · Guesser asks

Is the subject commonly found on human digits (fingers or toes)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject commonly found on human digits (fingers or toes)?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q17
1 · Guesser asks

Is the subject located at the tip of a mammal’s foot or toe?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located at the tip of a mammal’s foot or toe?"}}
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 a hard protruding structure that extends outward from the head of the animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a hard protruding structure that extends outward from the head of the animal?"}}
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. The eyebrows consist of thickened integument...
Open imaios.com
2 · Answer check returns No
Q19
1 · Guesser asks

Is the subject commonly used as a defensive weapon by the animal that possesses it?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject commonly used as a defensive weapon by the animal that possesses it?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

Britannica describes eyebrows as barriers that divert moisture, capture small particles, and shield the eyes from sunlight. It also describes them as contributing to nonverbal communication and expressing emotions.

Open britannica.com
Source 02

Source summary (model-reported)

The University of York reports that eyebrow movements express complex emotions, facilitate recognition and sympathy, and help establish social bonds. It discusses brow ridges as signals of dominance and aggression in early ancestors, while describing modern eyebrows primarily in terms of communication.

Open york.ac.uk
2 · Answer check returns No
Q20
1 · Guesser asks

Is the subject primarily used for insulation or thermoregulation in the animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily used for insulation or thermoregulation in the animal?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

Britannica describes eyebrows as a barrier that diverts moisture away from the eyes, captures small particles, and shields the eyes from sunlight. It also identifies their role in nonverbal communication.

Open britannica.com
Source 02

Source summary (model-reported)

The source states that the main function of eyebrows is to prevent moisture, especially sweat and rain, from flowing into the eye. It also describes protection from sunlight, debris, and a role in communication.

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

Is the subject primarily used for tactile sensing?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily used for tactile sensing?"}}
Oracle evidence2 model-reported sources

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

Source 01

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. Eyebrows also prevent debris ... and provide a more sensitive sense for detecting objects being near the eye.

Open wikidoc.org
Source 02

Source summary (model-reported)

The main biological function of eyebrows is to keep sweat and moisture away from our eyes. The arching shape and the direction of the individual hairs help to direct moisture towards the sides of our faces.

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

Is the subject composed of overlapping keratinous plates (scutes) that cover the animal's body?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject composed of overlapping keratinous plates (scutes) that cover the animal's body?"}}
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 reviews the biology, structure, and function of eyebrow hair. It states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body, with a shorter growing phase.

Open pubmed.ncbi.nlm.nih.gov
2 · Answer check returns No
Q23
1 · Guesser asks

Is the subject typically located on the neck of the animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically located on the neck of the animal?"}}
Oracle evidence3 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 filter‑feeding structure composed of keratin plates that hang from the upper jaw of a baleen whale?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a filter‑feeding structure composed of keratin plates that hang from the upper jaw of a baleen whale?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

Baleen whales have a special structure in their mouth that enables them to filter feed. Instead of teeth, they have baleen plates that hang down from their upper jaw. These are made from keratin.

Open nhm.ac.uk
Source 02

Source summary (model-reported)

Baleen whales don’t have teeth, instead they have 130 to 180 baleen plates that hang down each side of their upper jaws, like a fringy curtain. The plates are made out of fingernail-like material called keratin.

Open oceantoday.noaa.gov
2 · Answer check returns No
Q25
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 25

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
25
Counted
Yes · question 25
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q26
1 · Guesser asks

Is the subject located on the sole or underside of a mammal's foot?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located on the sole or underside of a mammal's foot?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q27
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 27

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
27
Counted
Yes · question 27
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q28
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 28

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
28
Counted
Yes · question 28
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q29
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 29

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
29
Counted
Yes · question 29
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q30
1 · Guesser asks

Is the subject located on the sole or underside of a mammal's foot?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located on the sole or underside of a mammal's foot?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q31
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 31

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
31
Counted
Yes · question 31
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q32
1 · Guesser asks

Is the subject primarily used for digging?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily used for digging?"}}
Oracle evidence2 model-reported sources

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

Source 01
Eyebrows act as a barrier, diverting moisture away from the eyes toward the sides of the face ... and capturing small particles before they reach the eye. Moreover, 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
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. Eyebrows also prevent debris ... from falling into the eyes, as well as ... facilitating communication.
Open wikidoc.org
2 · Answer check returns No
Q33
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 33

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
33
Counted
Yes · question 33
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q34
1 · Guesser reply rejectedTurn counted

Reply in the wrong format.

Output limit exceeded · fixed format reminder sent

Why this reply was rejectedOutput limit exceeded · turn 34

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
34
Counted
Yes · question 34
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q35
1 · Guesser asks

Is the subject located in the mouth of an animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located in the mouth 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
Q36
1 · Guesser asks

Is the subject located on the face of the animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject located on the face of the animal?"}}
Oracle evidence1 model-reported source

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

Source 01

Source summary (model-reported)

The page is under “Head and Face Terminology” and “Anatomy of the Periorbital Region.” It defines: “Eyebrow: The arch of hair on the brow,” and states that eyebrows extend in relation to the eye.

Open elementsofmorphology.nih.gov
2 · Answer check returns Yes
Q37
1 · Guesser asks

Is the subject primarily located on the eyelid?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily located on the eyelid?"}}
Oracle evidence2 model-reported sources

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

Source 01
Brow: The soft tissue at the junction of the frontalis and orbicularis oculi muscles, overlying the bony supraorbital ridge. Eyebrow: The arch of hair on the brow... Eyelid... A fold of skin and its subcutaneous components that covers the anterior globe.
Open elementsofmorphology.nih.gov
Source 02

Source summary (model-reported)

The male eyebrow sits along the supraorbital ridge... The study analyzed the eyebrow's three-dimensional relation to the eye and the supraorbital rim.

Open europepmc.org
2 · Answer check returns No
Q38
1 · Guesser asks

Is the subject primarily located above the eyes?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily located above the eyes?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q39
1 · Guesser guesses

Eyebrow

The keratinous hair located above the eye on an animal's face.

Validator rationale The target is the human eyebrow as a feature or area of short hairs, explicitly not an isolated hair. The proposal defines it as a singular keratinous hair on an animal’s face, which does not identify the target feature.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The keratinous hair located above the eye on an animal's face.","name":"Eyebrow","question":null}}
2 · Validator returns No
Q40
1 · Guesser guesses

Supraocular scale

A keratinous scale located above the eye on the face of reptiles such as snakes.

Validator rationale A supraocular scale is a reptilian scale, not the human eyebrow anatomical feature.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"A keratinous scale located above the eye on the face of reptiles such as snakes.","name":"Supraocular scale","question":null}}
2 · Validator returns No
END
1 · Guesser reply rejectedLimit reached

Reply in the wrong format.

Output limit exceeded · round ended without a retry

Why this reply was rejectedOutput limit exceeded · turn 41

The reply hit the output length limit before it was complete.

Recorded type
output_limit_exceeded
Turn
41
Counted
No
Feedback
No retry
What the model returnedExact text from the provider

The provider returned no text.

What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT