Situation: I am facing the bookshelf wall side and a chair is on my left.
Alternative situations: I am standing on the right side of the table, looking at the bookshelf. I am standing behind a chair on the right side of the table, looking at the bookshelf. I am standing behind a chair in middle of the round table, right side jumping up and down on the spot. I am standing behind a chair in middle of the round table, right side bending over to tie my shoes.
Question: What direction would I have to walk to reach the bookshelf?