premise: A guy in a blue shirt chases a guy in an orange shirt during a game of flag football. hypothesis: Two people are playing flag football.
entailment: 'During a game of flag football' implies that the guys are playing flag football.|entailment: Since guys are people, if one guy chases another guy during flag football, then there are two people playing flag football.|entailment: Two guys in different shirts would infer that at leat two people are involved.  During a game of flag football means that they are playing the game.