Use reasoning to lead to the answer of the following question:
Test for natural language inference.\nPremise: "A man in a vest is standing behind the man with a motorcyle."\nHypothesis: "Two bikers are standing."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell

it is not possible to tell
A man in a vest need not be a biker and him standing behind another man need not mean both are standing.

.

Therefore, the answer is it is not possible to tell