Record d8a39b8f06c442a08292650d8d3a3e23

We need to infer Nadia's belief about where the worn box is, based on observations. Timeline:

- 8:00: Quentin brings worn box to archive room. Nadia notices this from across the room. So at 8:00, Nadia sees Quentin bring worn box to archive room. So she knows it's in archive room at that moment.

- 8:01: He brings worn box to garage. At 8:01, she is nearby and sees this happen. So she sees him move it to garage. So she updates belief: now it's in garage.

- 8:02: She moves the worn box into the supply closet. So Nadia herself moves the worn box into supply closet. So she knows it's now in supply closet.

- 8:03: She carries the worn box to the library. So she moves it to library. So she knows it's in library.

- 8:04: Quentin brings the worn box over to the photo studio. At 8:04, she notices this from across the room. Wait: but she previously moved it to library at 8:03. At 8:04, Quentin brings the worn box to photo studio. Does she see that? She notices this from across the room. So she sees Quentin moving the worn box to photo studio. But does she know that the worn box is the same? She previously moved it to library; now Quentin is moving it again. She sees him bring the worn box (presumably the same) to photo studio. So she updates belief: now it's in photo studio? But she also might think it's still in library? She sees him moving it, so she knows it's now in photo studio.

- 8:05: He moved the worn box into the mail room. At 8:05, she sees this? Not mentioned she sees, but maybe she sees? Actually at 8:05, "he moved the worn box into the mail room." Not said she sees. But at 8:04 she noticed him bringing it to photo studio. At 8:05, he moved it to mail room. She might not have seen that move. But later at 8:06, Piers carried the dusty basket to boiler room. That's a different object. At 8:07, Quentin took the dusty basket and placed it in reception area. That's also different.

We need to determine where Nadia believes the worn box is. She has observed moves up to 8:04. After that, does she have any further observations about the worn box? At 8:05, "he moved the worn box into the mail room." It doesn't say she saw it. At 8:06 onward, it's about dusty basket, not worn box. So her last direct observation of the worn box is at 8:04 when Quentin brings it to photo studio, and she notices from across the room. So she believes it's in photo studio at that time.

But also earlier she moved it to library at 8:03. At 8:04, she sees Quentin bring the worn box to photo studio. Does she think it's the same box? She saw him bring the worn box (the same) to photo studio, so she updates location to photo studio. So her belief at 8:04 is that it's in photo studio.

Later events do not involve the worn box. So her belief remains that it's in photo studio, unless she later learns something else. She doesn't see any further moves of that box. So answer: photo studio.

But need to check if any ambiguity: At 8:04, "Quentin brought the worn box over to the photo studio. At 8:04, she noticed this from across the room." So she sees him bring it there. So she believes it's now in photo studio.

Thus answer: photo studio.