Premise: Two couples stop to take a photo.

Hypothesis: Some people decide to take a picture
yes

Premise: Man in hat and overalls with no shirt standing with man in striped shirt

Hypothesis: Chippendale's Dancers perform for Ronald and Nancy Reagan at the White House.
no

Premise: A man in a green hat is sleeping.

Hypothesis: The man is also wearing a green shirt.
it is not possible to tell

Premise: A man in a white hat is playing a red and white electric guitar while sitting at a synthesizer with multiple keyboards supported by white PVC pipes, with a blue railing in the background.

Hypothesis: a man wearing a hat
yes