Premise & hypothesis.
A group of people gathered around the starting line of a race.

A race is about to start.
++++++++++
true or not.
yes

Premise & hypothesis.
There are two men with sunglasses, one of which is wearing a hat and a backpack.

Two people are present.
++++++++++
true or not.
yes

Premise & hypothesis.
A man plays a red guitar and sings into a microphone while another man to his left plays keyboards.

They are in a band together.
++++++++++
true or not.
it is not possible to tell