Record 45e56f71c92c43ffb84c560d123bcaa0

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: 449/316 · cost: $0.000257 · latency: 1383.3 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: 45e56f71

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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 1,323 chars · 449 tokens in

At 8:00, Felix carried the small tablet to the utility closet. At 8:01, he carried the small tablet to the atrium. At 8:02, he brought the sturdy box over to the south stairwell. At 8:03, Gideon moved the sturdy box into the utility closet. At 8:04, he brought the sturdy box over to the print room. At 8:05, Felix brought the sturdy box over to the atrium. At 8:06, Gideon took the sturdy box and placed it in the south stairwell. At 8:07, he took the sturdy box and placed it in the atrium. At 8:08, Felix took the sturdy box and placed it in the print room. At 8:09, he brought the sturdy box over to the atrium. At 8:10, Gideon took the sturdy box and placed it in the south stairwell. At 8:11, he carried the sturdy box to the atrium. At 8:12, Felix carried the sturdy box to the south stairwell. At 8:13, Hana took the sturdy box and placed it in the atrium. At 8:14, he moved the sturdy box into the print room. At 8:15, he carried the sturdy box to the atrium. At 8:16, Gideon took the sturdy box and placed it in the south stairwell. At 8:17, Felix took the sturdy box and placed it in the print room. At 8:18, Gideon reorganized some papers on the desk. At 8:19, Hana refilled a cup of coffee.

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

Response 316 tokens out · finish: stop

unknown

Reasoning 1,207 chars

Model reasoning

We need to parse the scenario. It's a belief tracking problem. We have actions by Felix, Gideon, Hana. The small tablet is moved only at 8:00 (Felix carried the small tablet to the utility closet) and 8:01 (Felix carried the small tablet to the atrium). No further mentions of the small tablet. So the actual location after 8:01 is atrium. But the question: "Where does Hana believe the small tablet is?" We need to consider Hana's knowledge/beliefs based on observations. Hana appears only at 8:13 (took the sturdy box and placed it in the atrium), 8:14 (he moved the sturdy box into the print room) - note "he" refers to Hana? Actually 8:14 says "he moved the sturdy box into the print room." The previous subject is Hana, so "he" refers to Hana. Then 8:15 "he carried the sturdy box to the atrium." 8:19 Hana refilled a cup of coffee. So Hana is present from 8:13 onward. She did not witness the small tablet moves at 8:00 and 8:01? She wasn't present earlier. So what does Hana believe about the small tablet? She may have no knowledge, so unknown. However, could she infer from seeing Felix earlier? No. She didn't see those actions. So she has no belief about the tablet location. So answer "unknown".

Realized dims 5

dim	value
context_length	20.0
coreference	1.0
distractors	16.0
entity_state	2.0
temporal	0.0

Latent params 5

param	value
chain_length	2.0
coref_pressure	0.0
distractor_events	16.0
filler_events	2.0
scramble	0.0