Student: Test for natural language inference.\nPremise: "An elderly man in a blue hat sitting on a cement wall while looking at the ground."\nHypothesis: "A man is sad and is looking at the ground."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell.
Teacher: Let's think:

User
Not all elderly man in a blue hat sitting on a cement wall is sad. So the final answer is it is not possible to tell.
Assistant