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.
- Questions
- 15
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 4m 0s
- Round cost
- $0.0609 All 16 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.
{"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.
3 of 15 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 it a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow: The arch of hair on the brow. The hairs of the medial part are oriented laterally, while those of the middle (central) part are oriented superolaterally.Open elementsofmorphology.nih.gov (opens in a new tab)
Medical Definition: eyebrow noun: the ridge over the eye or the hair growing usually in a line or arch on the skin over it.Open merriam-webster.com (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Is it human-made?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it human-made?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The NIH Elements of Morphology page defines the eyebrow as “the arch of hair on the brow” and describes its anatomical position and parts.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The PubMed record describes eyebrow hair follicles, their morphogenesis and cycling, and identifies eyebrow hair as a biological anatomical subject.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)Source summary (model-reported)
The American Academy of Ophthalmology describes eyebrows as curved hairs above the eyes and discusses their biological functions, while separately noting that people may wax, tweeze, or dye them.
Open aao.org (opens in a new tab) 2 · Answer check returns No
Q3
1 · Guesser asks
Is it a tangible physical substance or object rather than an event, phenomenon, or abstract concept?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a tangible physical substance or object rather than an event, phenomenon, or abstract concept?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The anatomy of the various structures is described in more detail below. ... Eyebrow: The arch of hair on the brow (Fig. 2) ... The eyebrow is sometimes referred to as the supercilium.Open elementsofmorphology.nih.gov (opens in a new tab)
eyebrow noun [ C ] ... the line of short hairs above each eye in humansOpen dictionary.cambridge.org (opens in a new tab)
eyebrow noun ... the ridge over the eye or the hair growing usually in a line or arch on the skin over itOpen merriam-webster.com (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Is it an astronomical or celestial object beyond Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an astronomical or celestial object beyond Earth?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
An eyebrow is an area of short terminal hairs above each eye that follows the shape of the lower margin of the brow ridges of some mammals. In humans, eyebrows serve two main functions: prevention of sweat, water, and other debris from falling into the eye socket, and communication through facial expression.
Open en.wikipedia.org (opens in a new tab)Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The eyebrow is sometimes referred to as the supercilium.
Open elementsofmorphology.nih.gov (opens in a new tab) 2 · Answer check returns No
Q5
1 · Guesser asks
Is it a distinct geographic place, landform, or large-scale natural formation rather than a type of material or substance?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a distinct geographic place, landform, or large-scale natural formation rather than a type of material or substance?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
An eyebrow is an area of short terminal hairs above each eye that follows the shape of the lower margin of the brow ridges of some mammals.Open en.wikipedia.org (opens in a new tab)
the line of short hairs above each eye in humansOpen dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Is it derived from or part of a living organism such as an animal, plant, or human body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it derived from or part of a living organism such as an animal, plant, or human body?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The eyebrow is sometimes referred to as the supercilium.
Open elementsofmorphology.nih.gov (opens in a new tab)The line of short hairs above each eye in humans.Open dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns Yes
Q7
1 · Guesser asks
Is it derived from an animal including humans rather than from a plant, fungus, or microbe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it derived from an animal including humans rather than from a plant, fungus, or microbe?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The NIH Elements of Morphology page defines an eyebrow as “the arch of hair on the brow.” It identifies this terminology within the anatomy of the human periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
An eyebrow is described as an area of short terminal hairs above each eye that follows the shape of the brow ridges of some mammals. In humans, eyebrows serve functions including preventing sweat and debris from reaching the eye and communicating facial expression.
Open en.wikipedia.org (opens in a new tab) 2 · Answer check returns Yes
Q8
1 · Guesser asks
Is it a substance that is secreted, laid, or excreted by an animal rather than a structural anatomical body part?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a substance that is secreted, laid, or excreted by an animal rather than a structural anatomical body part?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
An eyebrow is an area of short terminal hairs above each eye that follows the shape of the lower margin of the brow ridges of some mammals.Open en.wikipedia.org (opens in a new tab)
Eyebrow: The arch of hair on the brow.Open elementsofmorphology.nih.gov (opens in a new tab)
The area of curved, delicate hairs above our eyes are believed to channel unwanted moisture—sweat and rain in particular—away from the eye.Open aao.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Is it a part of human anatomy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a part of human anatomy?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The definitions for the terms utilized in describing the features within this region are listed alphabetically. ... Eyebrow: The arch of hair on the brow (Fig. 2).
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The study examined the topographic anatomy of the male eyebrow. PubMed indexes the record with the subject headings “Eyebrows / anatomy & histology” and “Humans.”
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Is it located primarily in the head or neck region?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located primarily in the head or neck region?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The eyebrow is defined as the arch of hair on the brow, and the brow is the soft tissue overlying the bony supraorbital ridge in the periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The study describes the eyebrow's three-dimensional relation to the eye and supraorbital rim and concludes that the male eyebrow sits along the supraorbital ridge.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q11
1 · Guesser asks
Is it normally externally visible on a living human without dissection or medical imaging?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it normally externally visible on a living human without dissection or medical imaging?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
An eyebrow is an area of short terminal hairs above each eye... Humans developed a smooth forehead with visible, hairy eyebrows capable of a wide range of movement.
Open en.wikipedia.org (opens in a new tab)Source summary (model-reported)
Eyebrow: The arch of hair on the brow... The eyebrows usually extend further laterally than medially, in relation to the eye.
Open elementsofmorphology.nih.gov (opens in a new tab)eyebrow... the ridge over the eye or the hair growing usually in a line or arch on the skin over itOpen merriam-webster.com (opens in a new tab)
2 · Answer check returns Yes
Q12
1 · Guesser asks
Is it primarily involved in one of the senses of sight, hearing, smell, or taste?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily involved in one of the senses of sight, hearing, smell, or taste?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In humans, eyebrows serve two main functions: first, prevention of sweat, water, and other debris from falling down into the eye socket, and second, communication through facial expression.Open en.m.wikipedia.org (opens in a new tab)
Source summary (model-reported)
The eyebrow is categorized under the visual organ as an accessory visual structure. The page defines the eyebrows as arched eminences of integument above the orbits that support numerous short, thick hairs.
Open imaios.com (opens in a new tab)Source summary (model-reported)
The source identifies the eye and retinal photoreceptors as the structures for vision, the ear and cochlear hair cells for hearing, the nose and olfactory sensory neurons for smell, and the tongue and taste buds for taste.
Open kenhub.com (opens in a new tab) 2 · Answer check returns No
Q13
1 · Guesser asks
Is it hair or composed primarily of hair?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it hair or composed primarily of hair?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Cambridge defines eyebrow as “the line of short hairs above each eye in humans.”Open dictionary.cambridge.org (opens in a new tab)
The source describes eyebrows as “the strip of thick, delicate hairs following the brow ridge above the eye” and refers to “the strip of hair on the brow ridge.”Open carta.anthropogeny.org (opens in a new tab)
2 · Answer check returns Yes
Q14
1 · Guesser asks
Is it located on the scalp rather than on the face?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on the scalp rather than on the face?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The eyebrow is described within the anatomy of the periorbital region, overlying the supraorbital ridge.
Open elementsofmorphology.nih.gov (opens in a new tab)eyebrow: the ridge over the eye or the hair growing usually in a line or arch on the skin over it.Open merriam-webster.com (opens in a new tab)
Source summary (model-reported)
An eyebrow is the line of short hairs above each eye in humans. The forehead is the part of the face above the eyes.
Open dictionary.cambridge.org (opens in a new tab) 2 · Answer check returns No
Q15
1 · Guesser asks
Is it located above the eyes?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located above the eyes?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrow: The arch of hair on the brow ... The eyebrows usually extend further laterally than medially, in relation to the eye.
Open elementsofmorphology.nih.gov (opens in a new tab)Your eyebrows are the lines of hair that grow above your eyes.Open collinsdictionary.com (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Eyebrow
Strip of hair above the human eye
Validator rationale The proposal identifies the general anatomical kind: a human eyebrow, described as the strip of hair above the eye. It does not substitute an isolated hair, eye, cosmetic, or imitation.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Strip of hair above the human eye","name":"Eyebrow","question":null}} 2 · Validator returns Yes