Leo: If "One person is exiting the bottom of a long escalator while another has just entered at the bottom." does that mean that "Some people are on an escalator."?\nOptions:\n- yes\n- it is not possible to tell\n- no
Mei: OK, So, let's think first...
Me:
User
One person is exiting an escalator while another is just entering at the bottom so some people are on an escalator.
Thus, the answer is yes.
Assistant