premise: Three people are posing on the side of a mountain. hypothesis: The three people are posing at the mountain.
entailment: Posing at the mountain is the same as posing on the side of a mountain by the three people.|entailment: "Three people posing on the side of a mountain" is the same thing as "three people posing at a mountain".|entailment: "Three people are posing at the mountain" is a rephrasing of "Three people are posing on the side of a mountain.".