Record d1321958e0f3403ea61bb3e4618384c9

FAIL

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

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

finish_reason: stop · tokens in/out: 387/229 · cost: $0.000195 · latency: 342601.0 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: d1321958

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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 1,114 chars · 387 tokens in

At 8:10, Beatrix brought the narrow basket over to the north stairwell. At 8:11, Maya carried the narrow basket to the library. At 8:12, Felix reorganized some papers on the desk. At 8:13, Victor refilled a cup of coffee. At 8:14, Clara checked their email. At 8:15, Beatrix checked their email. At 8:16, Maya reorganized some papers on the desk. At 8:17, Talia made a quick phone call. At 8:18, Clara made a quick phone call. At 8:09, Beatrix brought the shiny box over to the mail room. At 8:00, Felix moved the shiny box into the boiler room. At 8:01, Maya moved the shiny box into the kitchen. At 8:02, she moved the shiny box into the cafeteria. At 8:03, Quentin moved the shiny box into the mail room. At 8:04, Ivo took the shiny box and placed it in the front office. At 8:05, Felix carried the shiny box to the west wing. At 8:06, Victor carried the shiny box to the front office. At 8:07, Quentin moved the shiny box into the cafeteria. At 8:08, Clara carried the shiny box to the gym.

Where does Quentin believe the shiny box is? Answer with only the location name (or 'unknown' if they have no belief).

Response 229 tokens out · finish: stop

cafeteria

Reasoning 986 chars

Model reasoning

We need to parse the timeline and determine Quentin's belief about the location of the shiny box. The scenario: multiple people moving the shiny box. We need to infer what Quentin believes the shiny box is at, based on his knowledge (i.e., what he observed). We have events with timestamps. Need to see which events Quentin observed. Typically, each person knows only their own actions and maybe others they see? The problem likely expects that each person only knows about actions they performed or observed directly. But we need to infer Quentin's belief based on the timeline: He moved the shiny box at 8:03 to the mail room, and at 8:07 moved it into the cafeteria. So his last action is moving it to the cafeteria at 8:07. After that, at 8:08 Clara carried it to the gym. Did Quentin see that? Probably not, unless he was present. No info that he observed. So Quentin believes it's in the cafeteria (the location he last moved it to). So answer: cafeteria.

Thus answer: cafeteria.

Realized dims 5

dim	value
context_length	19.0
coreference	12.0
distractors	2.0
entity_state	10.0
temporal	0.5789473684210527

Latent params 5

param	value
chain_length	10.0
coref_pressure	5.0
distractor_events	2.0
filler_events	2.0
scramble	1.0