Student: Premise: "Workmen and excavation machines hard at work at a building site."\nHypothesis: "Workmen and excavation machines are doing some tough work on a building site."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- it is not possible to tell\n- no.
Teacher: Let's think:

User
Doing some tough work is the same as being hard at work. So the final answer is yes.
Assistant