Situation: I am sitting on a couch. There is a lamp to my left.
Alternative situations: I am sitting on the couch while the lamp is on my left side and admiring the plant that is across from me on the right. I am sitting on the couch with my back against the back rest and I am trying to reach for the lamp cord with my left hand to turn it on. I sit on the couch to talk to my friend who is across from me and there is a table to my right. I took a seat on the couch and to the left of me was a lamp.
Question: Which couch is longer between the one I am sitting on and the one that is in front of me?