Record 9ad3af69d7884a8d874cf42a0931fac3

We need to parse events and track what Freya knows about the green tablet's location based on her observations.

We have timeline:

- 8:00: Gideon brought the green tablet over to the library. At 8:00, Freya noticed this from across the room.
Thus at 8:00, Freya sees that Gideon brings green tablet to library. So she believes after that action, the tablet is now in library (since she observed him bringing it there).

- 8:01: Maya brought the green tablet over to the atrium. At 8:01, Freya happened to be watching.
So Freya watches Maya bring green tablet to atrium. She observes that event; thus she updates belief: tablet now in atrium (overwrites previous belief). Note: The tablet had been moved by Gideon earlier but then Maya moves it again. Since Freya watched Maya moving it to atrium, she believes it's in atrium.

- 8:02: Gideon took the green tablet and placed it in the workshop. At 8:02, she was nearby and saw this happen.
Freya sees Gideon place tablet in workshop => belief: workshop.

- 8:03: He took the green tablet and placed it in the rooftop terrace. At 8:03, she was nearby and saw this happen.
She sees placement in rooftop terrace => belief: rooftop terrace.

- 8:04: He brought the green tablet over to the front office. At 8:04, she happened to be watching.
She sees him bring to front office => belief: front office.

- 8:05: He carried the green tablet to the meditation room. At 8:05, she happened to be watching.
Belief: meditation room.

- 8:06: Maya carried the green tablet to the north stairwell. At 8:06, Freya noticed this from across the room.
She notices Maya carrying tablet to north stairwell => belief: north stairwell.

- 8:07: Gideon moved the green tablet into the rooftop terrace. At 8:08... Wait we need check: Actually line says "At 8:07, Gideon moved the green tablet into the rooftop terrace." Then next lines are about other objects. Did Freya see this? Not mentioned any observation for 8:07. It just states the action but not that Freya observed. So we don't know if she saw it. No mention of her noticing or being nearby/watching. So we cannot update belief based on that unless we assume she didn't see. The problem likely expects we only update when Freya observed (noticed, happened to be watching, nearby and saw). For 8:07, no observation given, so belief stays as last known: north stairwell (from 8:06). However note that at 8:08 onward actions involve shiny box etc., not green tablet. So final belief remains north stairwell.

But double-check: At 8:07, Gideon moved the green tablet into the rooftop terrace. If Freya did not see, she still believes it's north stairwell. There's no later observation of green tablet after 8:06. So answer: north stairwell.

Check if any other observation of green tablet after 8:06: none. So answer: north stairwell.

Thus output exactly: north stairwell