Record d8960e95501048c093f6bf14fb5c68fa

We need to infer Nadia's belief about where the heavy box is, based on timeline and actions. Let's parse events:

- 8:00: Nadia moved the heavy box into the observation deck.
- 8:01: Ingrid brought the heavy box over to the photo studio.
- 8:02: Noor moved the worn folder into the photo studio.
- 8:03: Ingrid moved the worn folder into the server room.
- 8:04: Nadia reorganized some papers on the desk.
- 8:05: she refilled a cup of coffee.
- 8:06: she checked their email.

Question: Where does Nadia believe the heavy box is? Answer with only location name (or 'unknown').

We need to consider what Nadia knows. At 8:00, Nadia moved heavy box into observation deck. Then at 8:01, Ingrid brought the heavy box over to the photo studio. Did Nadia see that? Not specified. She might not know that Ingrid moved it. She only knows she moved it to observation deck at 8:00. She may not be aware of later movement. So her belief likely is that the heavy box is still in the observation deck (since she hasn't been told it was moved). She might think it's still there. She later does other tasks but no mention of moving the box again. So answer: observation deck.

Thus output just "observation deck".