Situation: I am sitting on an armchair with a bookshelf on my right and an armchair behind me.
Alternative situations: I am sitting on the brown armchair facing the black couch as I sip my cold coffee, the bookshelf is to my right side. I am enjoying a cup of coffee sitting on an armchair facing towards couch with no backpack.
Question: Which bookshelf is longer, the one in front of me or the one to the right?