Situation: I am sitting on the couch with a pillow in my six o'clock direction and a bookshelf in my nine o'clock direction.
Alternative situations: I am jumping over my couch to go sit on the loveseat behind it to the left. I sat down on the couch to relax and to my left was a bookshelf.
Question: What is sitting above the floor where the couch and coffee table are that is behind me?