Situation: I am writing on the whiteboard while being between a door on my left and a chair on my right.
Alternative situations: My two bosses sit in the two chairs behind me as I stare ahead at the whiteboard in front of me and wonder how I can best present my argument. I am writing my answer on the the whiteboard with a marker, the chair is to my right.
Question: How many trash cans are behind me on the left?