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Record 96d67feeb1e745b2aa4299f1e2a2ecb3

FAIL

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

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

finish_reason: stop · tokens in/out: 397/311 · cost: $0.000246 · latency: 6813.5 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: 96d67fee

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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 1,134 chars · 397 tokens in
At 8:11, Ivo took the large basket and placed it in the break room. At 8:09, Tamsin moved the heavy box into the kitchen. At 8:12, Finn reorganized some papers on the desk. At 8:13, Greta refilled a cup of coffee. At 8:14, Ivo checked their email. At 8:15, Victor checked their email. At 8:16, Quentin reorganized some papers on the desk. At 8:17, Finn made a quick phone call. At 8:18, Silas made a quick phone call. At 8:10, Finn brought the large basket over to the boiler room. At 8:00, he moved the heavy box into the meditation room. At 8:01, Ivo moved the heavy box into the conference room. At 8:02, Milo brought the heavy box over to the north stairwell. At 8:03, Ivo carried the heavy box to the conference room. At 8:04, Victor brought the heavy box over to the gym. At 8:05, Finn brought the heavy box over to the kitchen. At 8:06, Ivo brought the heavy box over to the north stairwell. At 8:07, Silas carried the heavy box to the workshop. At 8:08, Quentin carried the heavy box to the north stairwell.

Where does Victor believe the heavy box is? Answer with only the location name (or 'unknown' if they have no belief).
Response 311 tokens out · finish: stop
gym
Reasoning 1,392 chars
Model reasoning
We need to parse events and infer beliefs. The question: "Where does Victor believe the heavy box is?" We need to consider knowledge and belief updates based on observations. Typically, in these puzzles, each person sees actions they are present for? But we need to infer based on statements: we have timeline of actions with actors moving heavy box. We need to know what Victor knows. He sees some events? Usually, each person only knows actions they directly observe or are told? The problem statement doesn't specify visibility. Might assume each person only knows actions they performed or observed directly (i.e., they are present when they act). Also they might infer based on others' actions if they see them. But we have no info about who sees what. Possibly assume each person only knows their own actions. Then Victor's belief about heavy box location is based on his own actions: He "brought the heavy box over to the gym" at 8:04. Also at 8:15, Victor checked their email. No other heavy box moves by Victor. So Victor would believe the heavy box is in the gym, unless he later observed someone moving it. Did Victor see any later moves? Not indicated. So answer: gym.

But could there be other nuance: At 8:04 Victor moved heavy box to gym. At 8:05 Finn moved heavy box to kitchen. Victor might not know that because he wasn't present. So his belief remains gym. So answer "gym".
Realized dims 5
dimvalue
context_length19.0
coreference16.0
distractors2.0
entity_state10.0
temporal0.5789473684210527
Latent params 5
paramvalue
chain_length10.0
coref_pressure5.0
distractor_events2.0
filler_events2.0
scramble1.0