Premise & hypothesis.
A horse bucks a man off its back at the rodeo.

A man is riding a black horse at the rodeo.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A rock climber with a white helmet is repelling.

A rock climber repels down the mountain to meet his girlfriend.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A man sits perched in a tree.

The man is on the ground.
++++++++++
true or not.
no