Record 5e2ecf82c7a44c6e91279924efa92a10

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: 343/288 · cost: $0.000224 · latency: 4469.7 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: 5e2ecf82

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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 1,007 chars · 343 tokens in

At 8:00, Ivo brought the sturdy basket over to the gym. At 8:01, Tobias moved the sturdy basket into the print room. At 8:02, Ivo carried the faded folder to the gym. At 8:03, Tobias carried the faded folder to the observation deck. At 8:04, Ivo carried the faded folder to the gym. At 8:05, Lucas carried the faded folder to the observation deck. At 8:06, Tobias moved the faded folder into the print room. At 8:07, Ivo moved the faded folder into the observation deck. At 8:08, Lucas took the faded folder and placed it in the print room. At 8:09, Ivo carried the faded folder to the utility closet. At 8:10, he brought the faded folder over to the print room. At 8:11, Tobias brought the faded folder over to the utility closet. At 8:12, Ivo carried the faded folder to the observation deck. At 8:13, Tobias reorganized some papers on the desk. At 8:14, he refilled a cup of coffee.

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

Response 288 tokens out · finish: stop

unknown

Reasoning 1,287 chars

Model reasoning

We need to parse the scenario. It's a story with actions by Ivo, Tobias, Lucas. The question: "Where does Lucas believe the sturdy basket is?" We need to infer Lucas's belief about the location of the sturdy basket based on the events described. The events mention the sturdy basket only at 8:00 (Ivo brought the sturdy basket over to the gym) and 8:01 (Tobias moved the sturdy basket into the print room). No further mentions of the sturdy basket. Lucas never interacts with the sturdy basket. So what does Lucas believe about its location? We need to consider knowledge and belief modeling: Lucas's belief is based on what he observed or knows. Did Lucas witness any of those events? The narrative doesn't specify who sees what. Usually, unless specified, each person only knows their own actions and maybe what they observed. Lucas only appears at 8:05 (carried faded folder to observation deck), 8:08 (took faded folder and placed it in the print room). No mention of Lucas seeing the sturdy basket being moved. So Lucas likely doesn't know about the sturdy basket's location, thus belief is unknown. However, could we assume that Lucas knows the initial location (Ivo brought it to gym) because he might have been present? Not given. The safe answer: unknown.

Thus answer: unknown.

Realized dims 5

dim	value
context_length	15.0
coreference	3.0
distractors	11.0
entity_state	2.0
temporal	0.0

Latent params 5

param	value
chain_length	2.0
coref_pressure	0.0
distractor_events	11.0
filler_events	2.0
scramble	0.0