Record 62085f0bde7e453b81be09c6c2855143

FAIL

Verdict and provenance first; raw prompt/response/reasoning below, collapsed.

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✕FAILanswered "unknown" · model gpt-oss-120b

finish_reason: stop · tokens in/out: 558/469 · cost: $0.000365 · latency: 2716.3 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: 62085f0b

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Why did it fail? Nemotron 3 Ultra · live on Nebius Token Factory

Ultra reads the prompt, this answer, the verified correct answer and the difficulty settings, then explains the mistake. The verifier's own classification is shown next to it for comparison.

Prompt 1,730 chars · 558 tokens in

At 8:15, Oscar carried the faded folder to the east wing. At 8:16, Quentin moved the faded folder into the supply closet. At 8:17, Milo moved the faded folder into the lobby. At 8:18, Iris moved the faded folder into the supply closet. At 8:19, Priya moved the faded folder into the server room. At 8:20, Kira carried the faded folder to the lobby. At 8:22, Quentin reorganized some papers on the desk. At 8:14, he carried the faded folder to the lobby. At 8:23, he refilled a cup of coffee. At 8:24, Noor checked their email. At 8:25, Kira checked their email. At 8:26, Iris reorganized some papers on the desk. At 8:27, Priya made a quick phone call. At 8:28, Noor made a quick phone call. At 8:21, she carried the faded folder to the east wing. At 8:00, Kira moved the sturdy tablet into the lobby. At 8:01, Noor brought the sturdy tablet over to the server room. At 8:02, Priya took the faded folder and placed it in the lobby. At 8:03, she carried the faded folder to the server room. At 8:04, Kira carried the faded folder to the supply closet. At 8:05, Oscar took the faded folder and placed it in the server room. At 8:06, Iris took the faded folder and placed it in the lobby. At 8:07, Kira moved the faded folder into the east wing. At 8:08, Priya took the faded folder and placed it in the supply closet. At 8:09, Iris brought the faded folder over to the server room. At 8:10, Oscar moved the faded folder into the lobby. At 8:11, Noor moved the faded folder into the east wing. At 8:12, he carried the faded folder to the server room. At 8:13, Milo brought the faded folder over to the east wing.

Where does Milo believe the sturdy tablet is? Answer with only the location name (or 'unknown' if they have no belief).

Response 469 tokens out · finish: stop

unknown

Reasoning 2,156 chars

Model reasoning

We need to parse the timeline and infer beliefs. The question: "Where does Milo believe the sturdy tablet is?" We need to consider Milo's knowledge based on events he observed or could infer. The timeline includes many actions with timestamps, some possibly out of order. Need to track who sees what. Usually belief reasoning: agents know actions they performed and possibly observe others? The problem likely expects that Milo only knows about events he directly observed or that are public? The description doesn't specify visibility. Usually in such puzzles, each person knows only their own actions and maybe some others if they are present? But not given. Could be that all actions are publicly observable? However then Milo would know the final location of the sturdy tablet. Let's track sturdy tablet events:

- 8:00, Kira moved the sturdy tablet into the lobby.
- 8:01, Noor brought the sturdy tablet over to the server room.

No other mentions of sturdy tablet. So final location after 8:01 is server room. Who knows? Kira moved it to lobby at 8:00, then Noor moved it to server room at 8:01. Did Milo observe? Not specified. If Milo didn't see, his belief may be unknown or lobby? He might think it's still in lobby if he didn't see Noor move it. Did Milo have any interaction with the tablet? No. So his belief likely unknown or lobby. The puzzle likely expects "unknown" because Milo hasn't observed the tablet being moved after 8:00. But maybe all actions are publicly known, so Milo knows it's in server room. However the question asks "Where does Milo believe the sturdy tablet is?" If all actions are known, belief equals actual location: server room. But they ask to answer with location name or 'unknown' if they have no belief. So we need decide.

Given typical epistemic puzzles, each person only knows actions they performed and maybe those they observed directly. There's no mention of Milo observing the tablet moves. So Milo's belief: He only knows that at 8:00 Kira moved it to lobby, but he may not have seen that either. Actually he might not know any of that. He might have no belief. So answer "unknown".

Thus answer: unknown.

Realized dims 5

dim	value
context_length	29.0
coreference	9.0
distractors	20.0
entity_state	2.0
temporal	0.5517241379310345

Latent params 5

param	value
chain_length	2.0
coref_pressure	5.0
distractor_events	20.0
filler_events	2.0
scramble	1.0