Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
What changed
Source
Menu
Round

Round 1

Round 1

Identified Bike pump in 37 counted questions.

Back to all Bike pump rounds
Questions
37
Outcome
Solved
Format errors
No errors
Duration
10m 32s
Round cost
$0.6700 All 38 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.

6 of 37 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.

Source 02

Source summary (model-reported)

bicycle pump: a small pump that fills bicycle tires with air; a pump is a mechanical device that moves fluid or gas by pressure or suction.

Open vocabulary.com
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 evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

bicycle pump: a small pump that fills bicycle tires with air; type of: pump, a mechanical device that moves fluid or gas by pressure or suction.

Open vocabulary.com
2 · Answer check returns Yes
Q3
1 · Guesser asks

Is it typically larger than an adult human?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it typically larger than an adult human?"}}
Oracle evidence2 model-reported sources

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

Source 02
Mini pumps (or compact pumps) are usually hand pumps that have been made very small and light, so that they can readily be carried on a bicycle for emergency use; they can fit in pockets, saddle bags, or even include a water bottle bracket.
Open en.wikipedia.org
2 · Answer check returns No
Q4
1 · Guesser asks

Is it an electronic device?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an electronic device?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

A bicycle pump is a type of positive-displacement air pump specifically designed for inflating bicycle tires. In its most basic form, a bicycle pump functions via a hand-operated piston.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

The Air Rush Mini Electric Pump has a USB-C input, a lithium-polymer battery, a unit display, target-pressure and real-time-pressure readings, and an on/off start-stop button.

Open media.trekbikes.com
2 · Answer check returns Unknown
Q5
1 · Guesser asks

Is it mainly made of metal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly made of metal?"}}
Oracle evidence3 model-reported sources

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

Source 01
The first bicycle pump consisted of a metal cylinder that had a metal rod running down the middle of it. Many modern pumps use a very similar method, while some, such as the electric pumps, use an automated pumping mechanism.
Open en.wikipedia.org
2 · Answer check returns Rather yes
Q6
1 · Guesser asks

Is it a tool used in the hand?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a tool used in the hand?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

A bicycle pump is a type of positive-displacement air pump specifically designed for inflating bicycle tires. In its most basic form, a bicycle pump functions via a hand-operated piston. Types include stand pumps, hand pumps, and foot pumps; electric pumps are also described.

Open en.wikipedia.org
2 · Answer check returns Yes
Q7
1 · Guesser asks

Is it primarily used for cutting material?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for cutting material?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

Bicycle pumps are described as being used to repair flat tires and to check and top off tire pressure before rides; the page explains that these pumps inflate tires.

Open alsbicycles.com
2 · Answer check returns No
Q8
1 · Guesser asks

Is it primarily used to grip or hold objects?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to grip or hold objects?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

A bicycle pump is a type of positive-displacement air pump specifically designed for inflating bicycle tires. In its most basic form, a bicycle pump functions via a hand-operated piston.

Open en.wikipedia.org
2 · Answer check returns No
Q9
1 · Guesser asks

Is it primarily used to strike or hit things?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to strike or hit things?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

The source describes a bicycle pump as a positive-displacement air pump specifically designed for inflating bicycle tires. It explains that the pump draws in air and displaces it into the bicycle tire.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

The article presents using a bike pump to pump a bike tire, including selecting the pump, attaching it to the valve, and pumping the tube to the appropriate pressure.

Open bicycling.com
Source 03

Source summary (model-reported)

The guide states that a pump is used to inflate bicycle tires to their recommended pressure and describes floor pumps, hand pumps, and tire-inflation procedures.

Open schwinnbikes.com
2 · Answer check returns No
Q10
1 · Guesser asks

Is it primarily used to turn screws or other fasteners?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to turn screws or other fasteners?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q11
1 · Guesser asks

Does it normally require electricity or a battery to function?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it normally require electricity or a battery to function?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

In its most basic form, a bicycle pump functions via a hand-operated piston... There are also portable electric pumps... They require a charged battery or other power source.

Open en.wikipedia.org
2 · Answer check returns No
Q12
1 · Guesser asks

Is it primarily used for measuring length or distance?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for measuring length or distance?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

A bicycle pump is a type of positive-displacement air pump specifically designed for inflating bicycle tires. Most floor pumps ... have a built-in pressure gauge to indicate tire pressure.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

What do you need a bike pump for? For inflating a tire, of course! ... some hand pumps have a pressure gauge for accurately inflating your tires.

Open decathlon.com
2 · Answer check returns No
Q13
1 · Guesser asks

Is it typically used in a workshop or for construction and repair work?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it typically used in a workshop or for construction and repair work?"}}
Oracle evidence2 model-reported sources

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

Source 01
These beefy, leave-at-home pumps are perfect for garage and bike shop use. ... These small, lightweight pumps provide a quick, easy solution to flats on the road or trail.
Open rei.com
2 · Answer check returns Rather no
Q14
1 · Guesser asks

Is it primarily used in a kitchen?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used in a kitchen?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

Every bicycle rider should be prepared to pump up a flat tire or simply to top off their tire pressure to the recommended settings. The article describes bike pumps for home, bike, garage, bike-shop, road, and trail use.

Open rei.com
2 · Answer check returns No
Q15
1 · Guesser asks

Is it primarily used for gardening or outdoor work?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for gardening or outdoor work?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

Schwinn's guide describes using a pump to inflate bicycle tires to the recommended pressure, including at home or on the road, and identifies floor pumps and hand pumps as choices for that purpose.

Open schwinnbikes.com
2 · Answer check returns No
Q16
1 · Guesser asks

Is it primarily used to open something, such as a lock, bottle, or door?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to open something, such as a lock, bottle, or door?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q17
1 · Guesser asks

Is it primarily used as a weapon?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used as a weapon?"}}
Oracle evidence1 model-reported source

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

2 · Answer check returns No
Q18
1 · Guesser asks

Is it primarily used on or for the human body, such as for grooming, hygiene, or medical purposes?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used on or for the human body, such as for grooming, hygiene, or medical purposes?"}}
Oracle evidence2 model-reported sources

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

Source 02
Every bicycle rider should be prepared to pump up a flat tire or simply to top off their tire pressure to the recommended settings. To do so, you'll probably want a bike pump.
Open rei.com
2 · Answer check returns No
Q19
1 · Guesser asks

Is it primarily used for writing, drawing, or marking?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for writing, drawing, or marking?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q20
1 · Guesser asks

Is it primarily used for entertainment, music, sports, or play?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for entertainment, music, sports, or play?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q21
1 · Guesser asks

Is it primarily used for domestic household tasks other than cooking or gardening?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for domestic household tasks other than cooking or gardening?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

Bike pumps are described in terms of their use for bike tires, including garage, bike-shop, roadside, and trail use. The source also notes that some floor pumps can handle a variety of tasks in addition to bike tires.

Open rei.com
2 · Answer check returns No
Q22
1 · Guesser asks

Is it primarily used for measuring or indicating some quantity other than length?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used for measuring or indicating some quantity other than length?"}}
Oracle evidence2 model-reported sources

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

Source 01
A bicycle pump is a type of positive-displacement air pump specifically designed for inflating bicycle tires. Most floor pumps, also commonly called track pumps, have a built-in pressure gauge to indicate tire pressure.
Open en.wikipedia.org
2 · Answer check returns No
Q23
1 · Guesser asks

Is it primarily used to help see something, such as by magnifying, illuminating, or looking through it?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to help see something, such as by magnifying, illuminating, or looking through it?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q24
1 · Guesser asks

Is it primarily used to fasten or join two or more things together?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to fasten or join two or more things together?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The source describes a bicycle pump as a positive-displacement air pump specifically designed for inflating bicycle tires. It also explains that the pump compresses air and pushes it into the tire through the valve.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

The source states that using the right bicycle pump is important for inflating bike tyres and discusses matching the pump to the tyre's valve type.

Open bosch-diy.com
2 · Answer check returns No
Q25
1 · Guesser asks

Is it primarily used to shape, smooth, scrape, or file material?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to shape, smooth, scrape, or file material?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q26
1 · Guesser asks

Is it primarily used outdoors?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used outdoors?"}}
Oracle evidence3 model-reported sources

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

Source 03

Source summary (model-reported)

The product is identified as an 'Indoor/Outdoor Bike Pump' and is described as suitable for indoor or outdoor bicycle-pump installations.

Open huntco.com
2 · Answer check returns Unknown
Q27
1 · Guesser asks

Is it primarily used to make holes or pierce material?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to make holes or pierce material?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q28
1 · Guesser asks

Does it normally have one or more moving parts?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it normally have one or more moving parts?"}}
Oracle evidence2 model-reported sources

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

Source 01
In its most basic form, a bicycle pump functions via a hand-operated piston. During up-stroke, this piston draws air through a one-way valve into the pump from outside. During down-stroke, the piston then displaces air from the pump into the bicycle tire.
Open en.wikipedia.org
2 · Answer check returns Yes
Q29
1 · Guesser asks

Is it primarily used to lift, pull, or move heavy objects?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to lift, pull, or move heavy objects?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q30
1 · Guesser asks

Is it primarily used to start a fire or burn something?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to start a fire or burn something?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns No
Q31
1 · Guesser asks

Is it primarily used on or with a vehicle or other means of transportation?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used on or with a vehicle or other means of transportation?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q32
1 · Guesser asks

Is it primarily used to inflate tires?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily used to inflate tires?"}}
Oracle evidence3 model-reported sources

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

Source 03
Every bicycle rider should be prepared to pump up a flat tire or simply to top off their tire pressure to the recommended settings. To do so, you'll probably want a bike pump.
Open rei.com
2 · Answer check returns Yes
Q33
1 · Guesser asks

Is it primarily designed for bicycle tires specifically?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily designed for bicycle tires specifically?"}}
Oracle evidence1 model-reported source

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

2 · Answer check returns Yes
Q34
1 · Guesser asks

Is it designed to be carried on a bicycle while riding?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it designed to be carried on a bicycle while riding?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

Pumps can be fitted to a bracket on the bike frame ... or they can be carried in a pannier or other bag on the bike ... Mini pumps ... have been made very small and light, so that they can readily be carried on a bicycle for emergency use.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

Mini pumps ... come with brackets that are mounted onto the frame for carrying the pump. Minis also can be carried in a jersey or pack if you prefer not to adorn your bike with a pump.

Open blueridgecyclery.com
2 · Answer check returns Rather yes
Q35
1 · Guesser asks

Is it intended to stand on the floor while in use?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it intended to stand on the floor while in use?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The article distinguishes stand (floor or track) pumps from hand pumps. For stand pumps, the user rests the base on the floor and operates the pump with full strokes; mini pumps are hand pumps designed to be carried on a bicycle.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

The source distinguishes floor pumps from hand pumps: floor pumps are usually larger and used at home or in a garage, while smaller hand pumps are designed to be carried in backpacks or attached to bicycle frames.

Open decathlon.co.uk
2 · Answer check returns Unknown
Q36
1 · Guesser asks

Is it typically less than 30 centimeters (about 12 inches) long?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it typically less than 30 centimeters (about 12 inches) long?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The review lists tested floor pumps with heights of 23–27 inches (about 58–69 cm), while listed mini pumps range from 7.5 to 13.5 inches (about 19–34 cm).

Open yourbestdigs.com
2 · Answer check returns Unknown
Q37
1 · Guesser asks

Does it inflate by manually moving a handle or piston back and forth?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it inflate by manually moving a handle or piston back and forth?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

In its most basic form, a bicycle pump functions via a hand-operated piston. During up-stroke, this piston draws air through a one-way valve into the pump from outside. During down-stroke, the piston then displaces air from the pump into the bicycle tire.

Open en.wikipedia.org
Source 02

Source summary (model-reported)

The EMP electric air pump inflates your bike tyres quickly and effortlessly up to 8.3 bar (120 PSI). ... Select the desired tyre pressure ... Press start ... Once the target pressure is reached, the pump stops automatically.

Open steedcycles.com
2 · Answer check returns Unknown
G
1 · Guesser guessesNot counted

bicycle pump

a hand-held pump designed to inflate bicycle tires

Validator rationale The proposal identifies the general kind of bicycle pump and preserves its defining function; a hand-held/manual design is an accepted narrower variant.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"a hand-held pump designed to inflate bicycle tires","name":"bicycle pump","question":null}}
2 · Validator returns Yes