Premise: A man wearing a green and golden yellow baseball cap appears to have thrown the baseball.

Hypothesis: A man throws a ball.
yes

Premise: A woman dressed all in white with a white hat is standing behind a tennis net wielding a blue tennis racket.

Hypothesis: The woman is laying on the ground.
no

Premise: A man jumps from one boulder to another and two men try to catch him as he barely makes it.

Hypothesis: A man is trying to get through a river.
it is not possible to tell

Premise: A boy is walking in the snow with his dog and holding his snowboard while an older man, presumably his father, follows behind in the background.

Hypothesis: The boy is walking in the snow and a man is following him.
yes