Student: Test for natural language inference.\nPremise: "Two children playing on rocks."\nHypothesis: "Two children are sitting on rocks and playing cards."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell.
Teacher: Let's think:

User
We are told that children are playing on rocks but not that there are sitting on them or playing cards. So the final answer is it is not possible to tell.
Assistant