Premise: An asian visible from neck upward, seated in front of a grand piano which is placed on a wooden floor.

Hypothesis: An Asian visible from the neck up is sitting at the piano.
yes

Premise: A woman in a red tank top and a Men's Health hat is sitting on the ground eating her lunch.

Hypothesis: A woman in a red tank top and a Men's Health hat is joyously sitting
it is not possible to tell

Premise: The little girl is wearing a floating device in the water.

Hypothesis: A little girl plays hopscotch.
no

Premise: Man performing stunt, lady breaking block on his stomach with sludge hammer.

Hypothesis: A lady is breaking a block on a stuntman's stomach with a sledgehammer.
yes