Situation: I am sitting on the middle part of the couch with the end table on my left and the coffee table in front of me.
Alternative situations: After hanging the picture on a wall behind me, I am taking a rest on a couch with my feet on a coffee table in front of me. I sat on the couch and put my feet up on the coffee table in front of me.
Question: How many curtains are there on the window on my left?