premise: At a men's basketball game, number 55, in white and yellow, tries desperately to prevent number ten, in black and gray, from making a shot while the rest of the players watch frozen on the court. hypothesis: number 55 is guarding number 10 one on one.
entailment: Preventing someone from making a shot is part of guarding them.  The rest of the players watch frozen implies that number 55 is the only one guarding number 10.