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
- 13
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 2m 36s
- Round cost
- $0.1000 All 14 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.
Q1
1 · Guesser asks
Is the target a living organism or part of a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a living organism or part of a living organism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow — Semantic Type(s): Anatomical Structure. Definition: The arched strip of hair on the bony ridge above each eye socket.Open evsexplore.semantics.cancer.gov (opens in a new tab)
Source summary (model-reported)
An eyebrow is defined 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
Q2
1 · Guesser asks
Is the target an animal?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target an animal?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
the line of short hairs above each eye in humansOpen dictionary.cambridge.org (opens in a new tab)
Semantic Type(s): Anatomical Structure. Definition: The arched strip of hair on the bony ridge above each eye socket.Open evsexplore.semantics.cancer.gov (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is the target a plant?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a plant?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)
Source summary (model-reported)
Cambridge defines eyebrow as “the line of short hairs above each eye in humans.”
Open dictionary.cambridge.org (opens in a new tab)Source summary (model-reported)
The NIH Elements of Morphology describes the eyebrow as “the arch of hair on the brow” and distinguishes it from the surrounding brow tissue.
Open elementsofmorphology.nih.gov (opens in a new tab) 2 · Answer check returns No
Q4
1 · Guesser asks
Is the target a fungus?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a fungus?"}}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 an eyebrow as “The arch of hair on the brow” and describes the eyebrow's hairs and their orientations.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The PubMed record for a review titled “The biology, structure, and function of eyebrow hair” states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body, with a shorter growth phase.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)Source summary (model-reported)
The American Academy of Ophthalmology describes eyebrows as curved, delicate hairs above the eyes and discusses their function in channeling sweat and rain away from the eye.
Open aao.org (opens in a new tab) 2 · Answer check returns No
Q5
1 · Guesser asks
Is the target a microorganism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a microorganism?"}}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.Open elementsofmorphology.nih.gov (opens in a new tab)
A microorganism is a living thing that on its own is too small to be seen without a microscope.Open dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Is the target a part of the human body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a part of the human body?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Semantic Type(s): Anatomical Structure. Preferred Name: Eyebrow. Definition: The arched strip of hair on the bony ridge above each eye socket.Open evsexplore.semantics.cancer.gov (opens in a new tab)
An eyebrow is defined 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
Q7
1 · Guesser asks
Is the target an internal organ?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target an internal organ?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The arched strip of hair on the bony ridge above each eye socket. The eyebrow is an area of thick, delicate hairs above the eye.
Open evsexplore.semantics.cancer.gov (opens in a new tab)Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The brow is described as soft tissue overlying the bony supraorbital ridge.
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 No
Q8
1 · Guesser asks
Is the target normally visible on the outside of the body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target normally visible on the outside of the 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.Open elementsofmorphology.nih.gov (opens in a new tab)
An eyebrow is an area of short terminal hairs above each eye. Humans developed a smooth forehead with visible, hairy eyebrows.Open en.wikipedia.org (opens in a new tab)
Eyebrows are normally developed anatomical marking present over eyes. The eyebrows are positioned at the intersection of the forehead and the upper lid.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns Yes
Q9
1 · Guesser asks
Is the target located on the head or face?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target located on the head or face?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
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 arched strip of hair on the bony ridge above each eye socket. The eyebrow is an area of thick, delicate hairs above the eye. The source also identifies the eyebrow as an anatomical structure and maps it as a physical part of the head.
Open evsexplore.semantics.cancer.gov (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Is the target primarily used for sensing the external environment?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target primarily used for sensing the external environment?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrows automatically protect the eyes from glare, dust, dirt, sweat, and rain by diverting moisture and capturing small particles. They also contribute to nonverbal communication by conveying emotions through eyebrow movements.
Open britannica.com (opens in a new tab)Source summary (model-reported)
In humans, eyebrows serve two main functions: preventing sweat, water, and other debris from falling into the eye socket, and communication through facial expression. The page also reports research suggesting communication may be their primary function.
Open en.m.wikipedia.org (opens in a new tab)Source summary (model-reported)
Experts identify two main purposes of eyebrows: keeping moisture out of the eyes and communication. Eyebrows direct sweat and rain away from the eyes, reduce light and dirt reaching them, and help express emotions.
Open healthline.com (opens in a new tab) 2 · Answer check returns No
Q11
1 · Guesser asks
Is the target located above the eyes?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target located above the eyes?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The line of short hairs above each eye in humans.Open dictionary.cambridge.org (opens in a new tab)
The arched strip of hair on the bony ridge above each eye socket.Open evsexplore.semantics.cancer.gov (opens in a new tab)
2 · Answer check returns Yes
Q12
1 · Guesser asks
Does the target consist mainly of hair?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the target consist mainly of hair?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)
Source summary (model-reported)
The NCI definition describes the eyebrow as “the arched strip of hair on the bony ridge above each eye socket”; related definitions call it an arched strip or area of hairs.
Open evsexplore.semantics.cancer.gov (opens in a new tab) 2 · Answer check returns Yes
Q13
1 · Guesser asks
Does the target normally occur as a pair, one on each side of the face?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the target normally occur as a pair, one on each side of the face?"}}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)
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)
The eyebrows usually extend further laterally than medially, in relation to the eye, and are wider and thicker medially.Open elementsofmorphology.nih.gov (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
eyebrow
paired strip of hair above each eye
Validator rationale The proposal identifies the general anatomical feature, the human eyebrow, and does not confuse it with an isolated hair, the eye, or an imitation.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"paired strip of hair above each eye","name":"eyebrow","question":null}} 2 · Validator returns Yes