Use reasoning to lead to the answer of the following question:
When you wipe you feet on the door mat and walk through the door where do you enter?\nOptions:\n- a chair\n- school\n- living room\n- doorway\n- bathroom
 Reasoning process:
User
Door mats are kept on doors through which one enters the main room. Living rooms have door mats on their man doors. Living rooms are main rooms. Therefore, the final answer is living room.
Assistant