Premise: A child wearing a pink coat jumps over a plastic blow-up toy.

Hypothesis: No children are wearing coats.
no

Premise: Men dressed in costumes take part in a performance as a crowd watches.

Hypothesis: The men dressed in costumes are taking a lunch break after their performance.
no

Premise: a guy enjoying a day playing Frisbee.

Hypothesis: A person is at the park, playing Frisbee with dog.
it is not possible to tell

Premise: Several children are sitting on bleachers and wearing cowboy hats.

Hypothesis: kids are standing in the field
no