Naledi is sitting in a circular room which has four solid colored walls: red, blue, yellow, and green. She is facing the red wall directly. There is a single window in the middle of the blue wall, and there is a painting hanging on the green wall. Tanmay enters the room and stands with his back against the yellow wall. Tanmay is wearing a hat. Considering Naledi's position and her range of view, she notices something moving outside the window on the blue wall. Without turning around, she asks Tanmay whether it is raining outside. Tanmay turns his head to look out the window, sees people with umbrellas, and confirms that it is indeed raining. After a few minutes, Mariko enters the room and stands to the left of Naledi. From Mariko's position, she can see Tanmay, the red wall in front of Naledi, the blue wall with the window, and the green wall with the painting. Mariko tells Naledi that she likes the painting on the wall. 

Based on their position in the room and without anyone changing their orientation, what parts of the room or its contents can each person see, and how does this interact with their knowledge of the current state of the weather?
Provide a short response.
Naledi, facing the red wall directly, has a direct line of sight to the red and blue walls. She is able to see movement outside the window in the blue wall based on her peripheral vision or some reflection that captures the movement; however, she cannot see the yellow or green walls without turning around. Based on her current field of view, she wouldn't be able to discern whether it's raining outside, thus relying on Tanmay for this information.

Tanmay, standing with his back against the yellow wall, can see the green and blue walls directly. When turning his head to look out the window, his field of view includes the blue wall with the window, through which he can see it is raining outside, as well as part of the green wall. He cannot directly see the red or yellow walls from his position without changing his orientation entirely.

Mariko, standing to the left of Naledi, has a line of sight that encompasses Tanmay, the red wall, the blue wall with the window, and the green wall with the painting. She can see that there's a painting on the green wall and thus can comment on it, but she cannot see the yellow wall or Tanmay's back directly. With regards to the weather, unless she can see reflections or movements indicating rain through the blue wall's window, she would not be able to independently verify the weather conditions without relying on Tanmay's observation or stepping closer to the window herself.