Situation: I am sitting on a chair facing the table I am at while there is only one chair on the same side of the table with me on my right and six on my left and the blackboard is to my left.
Alternative situations: I placed my backpack on top of the etable and behind me was a row of chairs. I sat at the end of the table and behind me was a row of chairs.
Question: What am I standing on top of which is surrounded by chairs?