Premise & hypothesis.
Two male opponents play ultimate frisbee.

The two frisbee players are not on the same team.
++++++++++
true or not.
yes

Premise & hypothesis.
People walk down a busy city street on a sunny day.

There are people in the street.
++++++++++
true or not.
yes

Premise & hypothesis.
A man has his head buried in the sand with a green children's shovel behind him.

A man is sleeping.
++++++++++
true or not.
no