Situation: I am leaning on a bookshelf facing another bookshelf while there is a third bookshelf in my 10 o'clock direction.
Alternative situations: I placed my book on top of the ebookshelf and to my left was another bookshelf. I stand at the end of a bookshelf and adjust the lamp on top of it.
Question: What is on 9 o'clock the bookshelf in front of me?