Record 7d43d7f9f05945fa9b19a1fd4f97cd42

We need to determine what Nadia believes about the location of the heavy box based on her actions and knowledge timeline.

Given events:

- At 8:00, Nadia moved the heavy box into the observation deck.
Thus at that moment, after moving it, she knows it's in observation deck.

- At 8:01, Ingrid brought the heavy box over to the photo studio.
Nadia may not be aware of this unless she observed or was told. The description doesn't say she saw; we assume she didn't see because later she reorganizes papers etc. No mention of her seeing Ingrid move it. So after 8:01, Nadia still thinks it's in observation deck (her last known location) unless she got info otherwise.

- At 8:02, Noor moved the worn folder into the photo studio. Not relevant.

- At 8:03, Ingrid moved the worn folder into the server room. Not relevant.

- At 8:04, Nadia reorganized some papers on the desk. She might be near desk but not necessarily observing box.

- At 8:05, she refilled a cup of coffee.

- At 8:06, she checked their email.

No further info about box movement observed by Nadia. Therefore Nadia's belief remains that heavy box is in observation deck (the place she last moved it to and hasn't seen it moved). Unless she inferred something else from context? There's no indication she knows Ingrid moved it. So answer: observation deck.

Return just location name.