Student: Test for natural language inference.\nPremise: "A person rides their bike down a hill."\nHypothesis: "The person is coming back from riding up the hill."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell.
Teacher: Let's think:

User
A person riding down a hill does not necessarily imply that they are coming back from riding up the hill. So the final answer is it is not possible to tell.
Assistant