premise: A group of men playing ball out in a field. hypothesis: There are people playing in a field.
entailment: Sentence 1 talks about a group of men playing ball on a field. Sentence 2 just says there were people playing on the field. It does not include what they were playing or that they were men. But this sentence wouldn't exist if the group of men weren't there. So sentence 2 is a consequence of sentence 1.