Please answer the following question by reasoning step-by-step. Premise: "A person on a bicycle jumping over a dirt hill."\nBased on this premise, can we conclude that the hypothesis "A person is participating in a dirt bike competition." is true?\nOptions:\n- yes\n- it is not possible to tell\n- no. Step-by-step reasoning:
User
A person jumping over a dirt hill is not necessarily participating in a dirt bike competition. He or she might be riding for fun. A person on a bicycle is not necessarily riding a dirt bike. There are different types of bicycles. So the answer is it is not possible to tell.
Assistant