Situation: Taking advantage of the fact that the office is empty, I am cleaning the cabinet in the lower corner and that to my left there is a bookshelf.
Alternative situations: I am grabbing a marker from the cabinet in front of me so I can use it to write on the whiteboard in front of me to my left. I am grabbing a pen on the bookshelf on the right as I face the whiteboard in front of me.
Question: Which direction is the bookshelf?