Premise: A woman in a formal suit takes pictures as the crowd waits patiently for unfolding events.

Hypothesis: A woman is taking pictures.
yes

Premise: a man back flipping on trampoline

Hypothesis: The man showed off by performing a back flip.
it is not possible to tell

Premise: People are swimming and enjoying a day in a waterfall.

Hypothesis: People swimming in a waterfall.
yes

Premise: Four dancers dressed in white, flowing gowns perform their routine.

Hypothesis: There are four people in this picture.
yes