Question:
Premise: A little boy in black shorts jumps into a backyard pool next to a yellow stucco house.

Hypothesis: The little boy knows how to swim in the pool.
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: Two men carrying red backpacks are window shopping at a women's brassiere shop.

Hypothesis: The men are looking at the brassiere shop.
Is the hypothesis true?

Answer:
yes

Question:
Premise: The skateboard is falling away from the skateboarder as he attempt a jump.

Hypothesis: Someone is riding a bicycle.
Is the hypothesis true?

Answer:
no