premise: A passenger wearing a life jacket prepares to take a picture of a whale very close to the boat. hypothesis: A man is using a camera.
entailment: Man is a passenger, and prepares to take a picture is a rephrasing of is using a camera.|entailment: A camera is used to take a picture. prepares to take a picture is rephrased as using a camera.|entailment: A passenger is a man on a boat and because the whale is very close he is using a camera to take a picture.