premise: A group of young boys wearing track jackets stretch their legs on a gym floor as they sit in a circle. hypothesis: The boys in their track jackets in the gym stretch their legs.
entailment: Boys are assumed to be young. For the boys to be able to stretch their legs on a gym floor, it is assumed they are sitting.|entailment: Group of young boys are boys, and wearing track jackets is a paraphrase of in their track jackets.|entailment: Boys "in the gym stretch their legs" is a rephrase of "stretch their legs on a gym floor.".