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
- 12
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 1m 46s
- Round cost
- $0.1514 All 13 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":"AMZAISLM"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
5 of 12 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 physical entity made of matter?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a physical entity made of matter?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The source defines an eyebrow as an area of short terminal hairs above each eye.
Open en.wikipedia.org (opens in a new tab)Source summary (model-reported)
The source describes eyebrow hair follicles as having the same basic structure as hair follicles elsewhere on the body and discusses their biology and structure.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)Source summary (model-reported)
The source defines the eyebrow as the arch of hair on the brow and describes its medial, middle, and lateral parts.
Open elementsofmorphology.nih.gov (opens in a new tab) 2 · Answer check returns Yes
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 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
Q4
1 · Guesser asks
Is it a part of, or a substance produced by, a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a part of, or a substance produced by, a living organism?"}}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 defines the eyebrow as “The arch of hair on the brow” and discusses it within the anatomy of the human periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)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 functions including preventing sweat, water, and debris from falling into the eye socket.
Open en.wikipedia.org (opens in a new tab)Source summary (model-reported)
The eyebrows consist of serial arched rows of hair growing along the superior orbital margin. The article further describes the eyebrow as having medial, body, and tail parts.
Open pmc.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q5
1 · Guesser asks
Is it an anatomical structure found in humans or other animals?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an anatomical structure found in humans or other animals?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The Anatomy of the Periorbital Region page defines the “Eyebrow” as “The arch of hair on the brow” and describes it within the anatomy of the human periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)“eyebrow” is defined 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 (opens in a new tab)
2 · Answer check returns Yes
Q6
1 · Guesser asks
Is this structure normally present in the human body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this structure normally present in the human body?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow: The arch of hair on the brow ... The eyebrows usually extend further laterally than medially, in relation to the eye ... The eyebrow is sometimes referred to as the supercilium.Open elementsofmorphology.nih.gov (opens in a new tab)
An eyebrow is an area of short terminal hairs above each eye ... 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.wikipedia.org (opens in a new tab)
Eyebrows, the strip of thick, delicate hairs following the brow ridge above the eye ... humans have ... the strip of hair on the brow ridge ... across sexes.Open carta.anthropogeny.org (opens in a new tab)
2 · Answer check returns Yes
Q7
1 · Guesser asks
Is it normally visible on the outside of an intact human body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it normally visible on the outside of an intact human body?"}}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 eyebrows usually extend further laterally than medially, in relation to the eye.Open elementsofmorphology.nih.gov (opens in a new tab)
Eyebrows are the raised arches of skin with short, thick hairs above the supraorbital margins.Open earthslab.com (opens in a new tab)
2 · Answer check returns Yes
Q8
1 · Guesser asks
Is it located on the head or face?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on the head or face?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The page identifies the eyebrow as part of the anatomy of the periorbital region and defines it as “The arch of hair on the brow,” overlying the supraorbital ridge.
Open elementsofmorphology.nih.gov (opens in a new tab)The study concludes: “The male eyebrow sits along the supraorbital ridge and has a flat contour.” It describes the eyebrow's anatomical relation to the eye and supraorbital rim.Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)
Cambridge Dictionary defines an eyebrow as “the line of short hairs above each eye in humans.”Open dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns Yes
Q9
1 · Guesser asks
Is it part of the eye or a structure immediately surrounding the eye?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it part of the eye or a structure immediately surrounding the eye?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The general anatomy of the non-globe periorbital region is depicted... 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.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The male eyebrow sits along the supraorbital ridge... The age-related changes in the eyebrow area should be thought of as a 3-dimensional construct... of the eyelid-eyebrow continuum.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Is it part of the eyeball itself, rather than the eyelids or surrounding skin and hair?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it part of the eyeball itself, rather than the eyelids or surrounding skin and hair?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NIH describes the eyebrow as “the arch of hair on the brow” and separately defines the eyelid as “a fold of skin and its subcutaneous components that covers the anterior globe.”
Open elementsofmorphology.nih.gov (opens in a new tab)Cambridge defines eyebrow as “the line of short hairs above each eye in humans.”Open dictionary.cambridge.org (opens in a new tab)
Merriam-Webster defines 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 (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Is it made primarily of hair?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it made primarily of hair?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The NIH Elements of Morphology page defines the eyebrow as “The arch of hair on the brow” and discusses the hairs of its medial, middle, and lateral parts.Open elementsofmorphology.nih.gov (opens in a new tab)
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 (opens in a new tab)
Source summary (model-reported)
A PubMed-indexed review 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 (opens in a new tab) 2 · Answer check returns Yes
Q12
1 · Guesser asks
Does it grow directly along the edge of an eyelid?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow directly along the edge of an eyelid?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The upper eyelid extends superiorly to the eyebrow, which separates it from the forehead.Open emedicine.medscape.com (opens in a new tab)
Eyelashes: Hairs that emanate from the margins of the eyelids.Open elementsofmorphology.nih.gov (opens in a new tab)
2 · Answer check returns No
G
1 · Guesser guessesNot counted
Eyebrow
The strip of hair above the eye socket.
Validator rationale The proposal identifies the human eyebrow as the strip of hair above the eye, matching the target general anatomical feature.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The strip of hair above the eye socket.","name":"Eyebrow","question":null}} 2 · Validator returns Yes