premise: Two school age boys seem to be cleaning a fish they have caught while a hand of a third youngster reaches into the foreground seeming to offer them help. hypothesis: Two boys clean fish while a third offers help.
entailment: "Two school age boys seem to be cleaning a fish they have caught while a hand of a third youngster reaches into the foreground seeming to offer them help" is a more detailed way to say "Two boys clean fish while a third offers help.".