Use reasoning to lead to the answer of the following question:
Dave put his beer where he could get to it, but it would be off the floor. Where did he put it?\nOptions:\n- refrigerator\n- closet\n- can\n- shelf\n- soccer game
 Reasoning process:
User
Shelf is a flat storage area in a wall or in furniture. Shelves in wall and furniture are generally off the floor. Therefore, the final answer is shelf.
Assistant