Premise: A man gets air time on his wakeboard.

Hypothesis: The man is playing golf.
no

Premise: A bunch of dolls sitting on a table with a little girl in a blue sweater standing behind them smiling.

Hypothesis: There is a bunch of dolls sitting on a table with a little girl behind them, ready to play with them.
it is not possible to tell

Premise: Two little girls, both dressed in pink, play on the jungle gym.

Hypothesis: The girls are escaped convicts from the local prison.
no

Premise: A man is sitting on a bench in front of water fountain.

Hypothesis: A man is drinking from the water fountain.
no