Record d9d314625321447b9931408188f87a65

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: 250/331 · cost: $0.000236 · latency: 3486.3 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: d9d31462

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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 616 chars · 250 tokens in

At 8:00, Xiomara moved the large folder into the north stairwell. At 8:01, Hakim carried the large folder to the lobby. At 8:02, Oscar moved the blue basket into the lobby. At 8:03, Clara took the blue basket and placed it in the courtyard. At 8:04, she reorganized some papers on the desk. At 8:05, Hakim refilled a cup of coffee. At 8:06, she checked their email. At 8:07, Beatrix checked their email. At 8:08, Xiomara reorganized some papers on the desk. At 8:09, Aria made a quick phone call.

Where does Opal believe the large folder is? Answer with only the location name (or 'unknown' if they have no belief).

Response 331 tokens out · finish: stop

unknown

Reasoning 1,304 chars

Model reasoning

We need to infer Opal's belief about location of large folder based on events. We have timeline of actions by various people. Opal is not mentioned in actions. We need to consider what Opal might have observed or known. Possibly Opal observed some of these actions? The problem likely from a belief tracking puzzle where each person sees some actions. But we have no info about Opal's observations. Maybe Opal is a person who observed up to a certain time? The question: "Where does Opal believe the large folder is?" We need to infer based on what Opal knows. Since Opal is not mentioned, perhaps Opal didn't see any moves, so they have no belief: unknown. Or maybe Opal saw the first move at 8:00? Not given. Usually these puzzles give perspective: each person sees some actions. But here only actions listed, no perspective. Could be that Opal is the same as "she" at 8:06? No, "she" refers to someone earlier? At 8:06, "she checked their email." Who is "she"? The previous subject at 8:05 is Hakim (male?), but "she" likely refers to Clara? Actually timeline: 8:04 Clara reorganized papers. 8:05 Hakim refilled coffee. 8:06 she checked email. The "she" could be Clara again? Or maybe a new female not named. Hard.

But Opal not mentioned. So likely Opal has no belief: unknown.

Thus answer: unknown.

Realized dims 5

dim	value
context_length	10.0
coreference	7.0
distractors	2.0
entity_state	2.0
temporal	0.0

Latent params 5

param	value
chain_length	2.0
coref_pressure	4.0
distractor_events	2.0
filler_events	2.0
scramble	0.0