Record 89641036c9a3481b97f5c86e309ced5e

FAIL

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

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✕FAILanswered "print room" · model gpt-oss-120b

finish_reason: stop · tokens in/out: 267/528 · cost: $0.000357 · latency: 1823.3 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: 89641036

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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 698 chars · 267 tokens in

At 8:00, Jamal carried the faded box to the meditation room. At 8:00, Dexter was nearby and saw this happen. At 8:01, Jamal carried the faded box to the print room. At 8:01, Dexter noticed this from across the room. At 8:02, he carried the faded box to the archive room. At 8:03, Marcus moved the faded box into the print room. At 8:04, Jamal took the shiny box and placed it in the archive room. At 8:05, Dexter moved the shiny box into the cafeteria. At 8:06, he reorganized some papers on the desk. At 8:07, Jamal refilled a cup of coffee. At 8:08, Dexter checked their email.

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

Response 528 tokens out · finish: stop

print room

Reasoning 2,060 chars

Model reasoning

We need to track Dexter's belief about the faded box location based on his observations. He sees events at certain times.

We have timeline:

8:00: Jamal carried the faded box to the meditation room. At 8:00, Dexter was nearby and saw this happen. So Dexter sees faded box moved to meditation room. So his belief: faded box is in meditation room.

8:01: Jam Jam? Actually "At 8:01, Jamal carried the faded box to the print room. At 8:01, Dexter noticed this from across the room." So Dexter sees the faded box moved from meditation room to print room. So his belief updates to print room.

8:02: "he carried the faded box to the archive room." Who is "he"? Likely Jamal? The previous subject is Jamal, but ambiguous. At 8:02, "he carried the faded box to the archive room." Could be Jamal again. Dexter didn't see this? Not mentioned that Dexter observed. So Dexter does not see the move at 8:02. So his belief remains that it's in print room.

8:03: "Marcus moved the faded box into the print room." So at 8:03, Marcus moves faded box into print room. Does Dexter see? Not mentioned. So Dexter still believes it's in print room (since he hasn't observed any change). However note that at 8:02 it was moved to archive room (by Jamal). Then at 8:03 Marcus moves it into print room. So actual location after 8:03 is print room. Dexter's belief matches that (still print room). Good.

8:04: "Jamal took the shiny box and placed it in the archive room." Not about faded box.

8:05: "Dexter moved the shiny box into the cafeteria." Not about faded box.

8:06: "he reorganized some papers on the desk." Not about faded box.

8:07: "Jamal refilled a cup of coffee." Not about faded box.

8:08: "Dexter checked their email." Not about faded box.

Thus Dexter's last belief about faded box is after 8:03: it's in the print room. He hasn't observed any later moves of faded box. So answer: print room.

Check if any nuance: At 8:02, "he carried the faded box to the archive room." Could Dexter have observed? Not mentioned. So belief unchanged.

Thus answer: print room.

Realized dims 6

dim	value
context_length	9.0
coreference	3.0
distractors	2.0
entity_state	4.0
temporal	0.0
witness_gap	1.0

Latent params 6

param	value
chain_length	4.0
coref_pressure	0.0
distractor_events	2.0
filler_events	2.0
scramble	0.0
witness_cutoff	0.0