Record c228d7bb8f9b47b293ab90c4fc14be73

FAIL

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

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

finish_reason: stop · tokens in/out: 704/373 · cost: $0.000329 · latency: 12595.6 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: c228d7bb

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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 2,264 chars · 704 tokens in

At 8:00, Oscar took the sturdy box and placed it in the loading dock. At 8:01, Dana brought the sturdy box over to the gym. At 8:02, Opal carried the sturdy box to the break room. At 8:03, Oscar took the sturdy box and placed it in the cafeteria. At 8:04, Freya brought the sturdy box over to the east wing. At 8:05, Greta moved the sturdy box into the loading dock. At 8:06, Opal brought the sturdy box over to the east wing. At 8:07, Lena carried the sturdy box to the boiler room. At 8:08, Opal carried the sturdy box to the east wing. At 8:09, Oscar took the sturdy box and placed it in the cafeteria. At 8:10, Noor took the shiny basket and placed it in the photo studio. At 8:11, Greta carried the shiny basket to the gym. At 8:12, Lena brought the shiny basket over to the print room. At 8:13, Kian brought the shiny basket over to the break room. At 8:14, he moved the shiny basket into the wine cellar. At 8:15, he carried the shiny basket to the rooftop terrace. At 8:16, Oscar brought the shiny basket over to the loading dock. At 8:17, Greta took the shiny basket and placed it in the boiler room. At 8:18, Lena carried the shiny basket to the storage room. At 8:19, Freya brought the shiny basket over to the rooftop terrace. At 8:20, Dana took the shiny basket and placed it in the storage room. At 8:21, Greta brought the shiny basket over to the cafeteria. At 8:22, Opal carried the shiny basket to the storage room. At 8:23, Kian moved the shiny basket into the photo studio. At 8:24, Dana moved the shiny basket into the gym. At 8:25, Greta took the shiny basket and placed it in the storage room. At 8:26, Oscar moved the shiny basket into the loading dock. At 8:27, Kian carried the shiny basket to the print room. At 8:28, Lena carried the shiny basket to the loading dock. At 8:29, she carried the shiny basket to the storage room. At 8:30, Kian reorganized some papers on the desk. At 8:31, Freya refilled a cup of coffee. At 8:32, Noor checked their email. At 8:33, Lena checked their email. At 8:34, Freya reorganized some papers on the desk. At 8:35, Greta made a quick phone call. At 8:36, Dana made a quick phone call.

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

Response 373 tokens out · finish: stop

gym

Reasoning 1,751 chars

Model reasoning

We need to track beliefs. The question: "Where does Dana believe the sturdy box is?" We need to consider Dana's knowledge based on events she observed. We have a timeline of actions. Need to see which actions Dana observed. She may have observed some moves of the sturdy box. She also may have observed moves of shiny basket but irrelevant. We need to infer Dana's belief about location of sturdy box at end (after 8:05? Actually timeline continues). At the end of timeline (8:36). We need Dana's belief at that point.

Assume agents have perfect perception of actions they are involved in? Usually in such belief tracking puzzles, each person knows actions they performed and possibly sees others? The problem statement doesn't specify visibility. Usually, each person only knows actions they performed or observed. But we have no explicit observation events. Might assume that each person knows only their own actions. So Dana's belief about sturdy box based on her own actions involving sturdy box. Let's list Dana's actions concerning sturdy box:

- 8:01, Dana brought the sturdy box over to the gym. So at that time, Dana knows box moved to gym.
- Any other Dana actions with sturdy box? No other mention of Dana moving sturdy box. So after 8:01, Dana hasn't observed any further moves of sturdy box. So she would still believe it's in the gym, unless she observed others moving it (but not given). So answer: gym.

But need to consider if Dana might have observed later moves indirectly? Not specified. Usually these puzzles assume each person knows all actions (common knowledge) unless specified. But then why ask about belief? Could be that Dana's belief may be outdated because she didn't see later moves. So answer: gym.

Thus output "gym".

Realized dims 5

dim	value
context_length	37.0
coreference	16.0
distractors	20.0
entity_state	10.0
temporal	0.0

Latent params 5

param	value
chain_length	10.0
coref_pressure	5.0
distractor_events	20.0
filler_events	2.0
scramble	0.0