Premise: "A boy in a pink t-shirt is riding a bike over a sand pile while two others are riding in the street."
Hypothesis: "The boy and his friends are outside."
Do we know that the hypothesis entailed by the premise?
Let's solve step-by-step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Two boys who are riding in the street need not necessarily be FRIENDS with a boy who is riding a bike over a sand pile. The answer is it is not possible to tell.