Premise & hypothesis.
spectators watch as a stunt plane with colored smoke trails flies over the beach

People watch the stunt plane in the sky at an airplane show on the beach.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A group of people in life vests and hard hats on a boat.

The people are going out to rescue somebody.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Several street performers beat tribal drums and dance while wearing matching white and red garb.

Several street performers are beating tribal drums and dancing.
++++++++++
true or not.
yes