Record f8cdb55045254e6db3feaef9f9bf8da1

FAIL

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

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✕FAILanswered "observation deck" · model Nemotron 3 Super 120B

finish_reason: stop · tokens in/out: 672/518 · cost: $0.000287 · latency: 8251.5 ms

belieftemplatestop

verifier_detail: kind=belief;campaign=1

lineage: f8cdb550

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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 2,182 chars · 672 tokens in

At 8:00, Petra moved the heavy basket into the break room. At 8:01, Juno carried the heavy basket to the west wing. At 8:02, Priya took the heavy basket and placed it in the cafeteria. At 8:03, Omar moved the heavy basket into the observation deck. At 8:04, Maya moved the heavy basket into the library. At 8:05, Lena moved the heavy basket into the observation deck. At 8:06, Omar took the heavy basket and placed it in the kitchen. At 8:07, Juno brought the heavy basket over to the reception area. At 8:08, she brought the heavy basket over to the kitchen. At 8:09, she carried the heavy basket to the south stairwell. At 8:10, Omar carried the red box to the south stairwell. At 8:11, Priya brought the red box over to the loading dock. At 8:12, Quinn carried the red box to the kitchen. At 8:13, Petra moved the red box into the security office. At 8:14, Priya brought the red box over to the break room. At 8:15, she took the red box and placed it in the observation deck. At 8:16, Petra moved the red box into the west wing. At 8:17, Quinn moved the red box into the library. At 8:18, Petra moved the red box into the south stairwell. At 8:19, Omar carried the red box to the security office. At 8:20, Juno carried the red box to the reception area. At 8:21, Maya took the red box and placed it in the garage. At 8:22, Omar carried the red box to the south stairwell. At 8:23, Petra brought the red box over to the gym. At 8:24, Lena carried the red box to the west wing. At 8:25, Quinn took the red box and placed it in the kitchen. At 8:26, Omar moved the red box into the west wing. At 8:27, Adrian brought the red box over to the gym. At 8:28, Petra took the red box and placed it in the security office. At 8:29, Omar brought the red box over to the library. At 8:30, Maya reorganized some papers on the desk. At 8:31, Petra refilled a cup of coffee. At 8:32, she checked their email. At 8:33, Juno checked their email. At 8:34, Lena reorganized some papers on the desk. At 8:35, Priya made a quick phone call. At 8:36, Quinn made a quick phone call.

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

Response 518 tokens out · finish: stop


observation deck

Reasoning 2,378 chars

Model reasoning

We need to determine what Lena believes about the location of the heavy basket based on events described. The narrative includes actions by various people moving items; we must infer beliefs from perspective of each person? Usually these puzzles ask where a particular person believes an object is, given that they may not have observed all moves. We need to track knowledge states: each person knows about actions they performed or witnessed? Typically, we assume each person only knows about actions they themselves performed, unless they observed others? The problem statement doesn't specify observation; typical "belief" puzzles assume agents only know about actions they themselves performed, and they update belief based on their own actions. They might also know about actions they observed? Not stated. Usually in such puzzles, each person knows the location of an object only if they moved it themselves, otherwise they may have outdated belief. However sometimes they also know if they saw someone else move it? Not given. So likely we assume each person's belief is based solely on the actions they performed (they know where they placed it). If they didn't move it after a certain time, they believe it's where they last left it (if they moved it). If they never moved it, they have no belief (unknown). Let's apply.

We need Lena's belief about the heavy basket.

List events involving Lena:

- At 8:04, Maya moved the heavy basket into the library. (not Lena)
- At 8:05, Lena moved the heavy basket into the observation deck.
- At 8:06, Omar took the heavy basket and placed it in the kitchen.
- At 8:07, Juno brought the heavy basket over to the reception area.
- At 8:08, she [Juno] brought the heavy basket over to the kitchen.
- At 8:09, she [Juno] carried the heavy basket to the south stairwell.
- ... later events involve red box, not heavy basket.

Thus Lena only moved the heavy basket at 8:05 into observation deck. After that, she did not interact with heavy basket again. She didn't see others moving it (we assume). So her belief would be that the heavy basket is still in the observation deck (where she left it). Unless she later observed others moving it? No mention.

Thus answer: observation deck.

Check if any later event could be observed by Lena indirectly? Not mentioned. So answer: observation deck.

Thus output exactly: observation deck.

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