Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
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Round

Round 1

Round 1

Identified Eyebrow in 11 counted questions.

Back to all Eyebrow rounds
Questions
11
Outcome
Solved
Format errors
No errors
Duration
3m 0s
Round cost
$0.1120 All 12 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.

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":"EAQCORIU"}

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

Q1
1 · Guesser asks

Is it a living organism (or part of one), such as an animal, plant, or body part?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism (or part of one), such as an animal, plant, or body part?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

The page identifies the eyebrow as one of the accessory visual structures of the eye and describes it as an area of thick, short hairs above the eye.

Open en.wikipedia.org
2 · Answer check returns Yes
Q2
1 · Guesser asks

Is it an animal (or part of an animal)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an animal (or part of an animal)?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q3
1 · Guesser asks

Is it a whole animal rather than a body part?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a whole animal rather than a body part?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q4
1 · Guesser asks

Is this body part found in humans?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this body part found in humans?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q5
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 02

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
2 · Answer check returns No
Q6
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 02

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
2 · Answer check returns Yes
Q7
1 · Guesser asks

Is it 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 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.

Source 01

Source summary (model-reported)

The eyebrow is an area of coarse skin hairs above the eye that follows the shape of the brow ridges. 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.

Open wikidoc.org
Source 02

Source summary (model-reported)

The ear is the organ that senses sound waves and allows us to hear... Odor receptors line the passages of the nose... Taste receptors are found in tiny bumps on the tongue called taste buds... the eye is the organ that senses light and allows us to see.

Open bio.libretexts.org
2 · Answer check returns No
Q8
1 · Guesser asks

Is it made of hair (like scalp hair, eyebrow, eyelash, or beard)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it made of hair (like scalp hair, eyebrow, eyelash, or beard)?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns Yes
Q9
1 · Guesser asks

Is it located on the face (below the hairline), rather than on the scalp?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on the face (below the hairline), rather than on the scalp?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns Yes
Q10
1 · Guesser asks

Is it located around the eyes (such as eyebrows or eyelashes) rather than the lower face?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located around the eyes (such as eyebrows or eyelashes) rather than the lower face?"}}
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

Does it grow from the edge of the eyelid (eyelashes) rather than above the eye on the brow ridge?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow from the edge of the eyelid (eyelashes) rather than above the eye on the brow ridge?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The NIH describes the brow as soft tissue overlying the bony supraorbital ridge and the eyebrow as the arch of hair on the brow. It separately defines eyelashes as hairs that emanate from the margins of the eyelids.

Open elementsofmorphology.nih.gov
2 · Answer check returns No
G
1 · Guesser guessesNot counted

Eyebrow

The strip of hair growing on the brow ridge above the eye

Validator rationale The proposal identifies the general human eyebrow body feature, including its location and hair-bearing nature, and does not substitute an isolated hair, eye, cosmetic, or imitation.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The strip of hair growing on the brow ridge above the eye","name":"Eyebrow","question":null}}
2 · Validator returns Yes