Premise: A skateboarder in a red shirt.

Hypothesis: Someone with a skateboard is wearing red clothing.
yes

Premise: A skateboarder performing a kickflip over short stairs.

Hypothesis: The person is participating in extreme sport.
yes

Premise: A man in black shorts is stretching out his leg.

Hypothesis: No one is stretching.
no

Premise: A male driving a bulldozer to plow green grass and rocks

Hypothesis: A man is driving a bulldozer.
yes