Premise & hypothesis.
A man in a cowboy outfit riding a horse and chasing a small bull.

A bull runs away as a horse chases him.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A girl in a blue dress and another girl in a purple dress, both smiling.

The girls are attending a party.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A profession baseball player pitches a ball in a baseball game.

A baseball player throws the first pitch of the game.
++++++++++
true or not.
it is not possible to tell