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
- 3m 27s
- Round cost
- $0.1580 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":"AMZAISLM"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
2 of 13 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 (or a kind of living organism)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism (or a kind of living organism)?"}}Oracle evidence3 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)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 eyebrows consist of serial arched rows (5–7 rows) of hair growing along the superior orbital margin.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Is it human-made (an artifact, machine, structure, or product)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it human-made (an artifact, machine, structure, or product)?"}}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)
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)
2 · Answer check returns No
Q3
1 · Guesser asks
Is it a physical object or substance (rather than an abstract concept or phenomenon)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a physical object or substance (rather than an abstract concept or phenomenon)?"}}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)eyebrow noun [ C ] ... the line of short hairs above each eye in humansOpen dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Is it located beyond Earth (a celestial body or astronomical object)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located beyond Earth (a celestial body or astronomical object)?"}}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” and describes it as extending in relation to the eye within the periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Cambridge Dictionary defines 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 No
Q5
1 · Guesser asks
Is it a part of a living organism's body (e.g., an organ, bone, or body part)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a part of a living organism's body (e.g., an organ, bone, or body part)?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Your eyebrows are the curved areas of hair on your face above each of your eyes. ... type of: hair a covering for the body (or parts of it) consisting of a dense growth of threadlike structures.
Open vocabulary.com (opens in a new tab)the line of short hairs that humans have above each eyeOpen dictionary.cambridge.org (opens in a new tab)
Source summary (model-reported)
The eyebrow is an area of coarse skin hairs above the eye ... Categories: Facial hair; Eye; Facial features.
Open wikidoc.org (opens in a new tab) 2 · Answer check returns Yes
Q6
1 · Guesser asks
Is it a body part found in humans?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a body part found in humans?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NIH's anatomy terminology defines: “Eyebrow: The arch of hair on the brow.” The page describes this within the anatomy of the human periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Cambridge Dictionary defines 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
Q7
1 · Guesser asks
Is it an internal organ (located inside the body, not visible externally)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an internal organ (located inside the body, not visible externally)?"}}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 defines the eyebrow as “the arch of hair on the brow” and describes the brow as soft tissue overlying the bony supraorbital ridge.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The eyebrow is described as an area of thick, short hairs above the eye. It is listed among accessory visual structures that protect and support the eye.
Open en.wikipedia.org (opens in a new tab) 2 · Answer check returns No
Q8
1 · Guesser asks
Is it located on the head?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on the head?"}}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 brow is the soft tissue at the junction of the frontalis and orbicularis oculi muscles, overlying the bony supraorbital ridge.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The male eyebrow sits along the supraorbital ridge. The study describes the eyebrow's three-dimensional relation to the eye and supraorbital rim.
Open europepmc.org (opens in a new tab) 2 · Answer check returns Yes
Q9
1 · Guesser asks
Is it primarily a sensory organ (used for seeing, hearing, smelling, or tasting)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily a sensory organ (used for seeing, hearing, smelling, or tasting)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The main function of the eyebrows is to prevent moisture, mostly salty sweat and rain, from flowing into the eye... Eyebrows also prevent debris... and have an important facilitative function in communication.Open wikidoc.org (opens in a new tab)
Special senses include the vision for which the eyes are the specialized sense organs, hearing (ears), balance (ears), taste (tongue), and smell (nasal passages).Open bio.libretexts.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Is it primarily made of keratin (like hair)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily made of keratin (like hair)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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...
Open carta.anthropogeny.org (opens in a new tab)The typical mammalian hair consists of the shaft, protruding above the skin, and the root, which is sunk in a pit (follicle) beneath the skin surface. Except for a few growing cells at the base of the root, the hair is dead tissue, composed of keratin and related proteins.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Does it grow on the face (rather than on the scalp)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow on the face (rather than on the scalp)?"}}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)Source summary (model-reported)
The area of curved, delicate hairs above our eyes ... Eyebrows and eyelashes remained a core part of our features.
Open aao.org (opens in a new tab) 2 · Answer check returns Yes
Q12
1 · Guesser asks
Is it located above or around the eyes (rather than around the mouth or chin)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located above or around the eyes (rather than around the mouth or chin)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)
Eyebrow: the ridge over the eye or 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
Q13
1 · Guesser asks
Does it grow along the edge of the eyelid?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow along the edge of the eyelid?"}}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... Eyelashes: Hairs that emanate from the margins of the eyelids... Eyelid... is bounded... inferiorly by the lid margin.Open elementsofmorphology.nih.gov (opens in a new tab)
The male eyebrow sits along the supraorbital ridge and has a flat contour.Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
G
1 · Guesser guessesNot counted
Eyebrow
The strip of hair growing above each eye along the brow ridge
Validator rationale The proposal identifies the general anatomical eyebrow, matching the target’s defining feature above the eye and not a separate hair, eye, product, or imitation.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The strip of hair growing above each eye along the brow ridge","name":"Eyebrow","question":null}} 2 · Validator returns Yes