Student: Premise: "A dog runs on concrete holding a blue ball."\nBased on this premise, can we conclude that the hypothesis "The ball was thrown by the dog's owner." is true?\nOptions:\n- yes\n- it is not possible to tell\n- no.
Teacher: Let's think:

User
A dog can acquire a ball through other means than its owner. So the final answer is it is not possible to tell.
Assistant