Please answer the following question by reasoning step-by-step.
Premise: "A man in a black vest and blue jeans is rollerskating."\nHypothesis: "The man is rollerskating in his black vest and blue jeans."\nDo we know that the hypothesis entailed by the premise?

yes
Someone doing something in a black vest and blue jeans implies they are his black vest and blue jeans.

.

Thus, the answer is yes