Situation: I am seated on a chair by the short end of the table, facing some doors.
Alternative situations: I am standing up in front of a chair on head of table to reach something in front of me on the table, the window is to my right. I am standing reaching forward on the table reaching for the ketchup with the chair right behind me, the window is on my right side.
Question: From what is laying the backpack that is on my 7 o'clock?