Student: Test for natural language inference.\nPremise: "A shirtless man is doing a back flip on a beach."\nHypothesis: "A sad man is doing a back flip on a beach."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell.
Teacher: Let's think:

User
The shirtless man doing a back flip might not be sad. So the final answer is it is not possible to tell.
Assistant