I'll give you a question, please answer with step-by-step reasoning process. There is a landing at the top of what that you walk up?\nOptions:\n- stairwell\n- ocean\n- airport\n- ladder\n- apartment building

User
Stairwell is a shaft in a building in which a staircase is built. Stairwell is a compartment extending vertically through a building in which stairs are placed. There is a landing at the top of a stairwell that you walk up.
The answer: stairwell.
Assistant