Premise & hypothesis.
A tennis player swinging a racket while the ball boy watch.

A ball boy is wearing sneakers.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
The back of hat wearing juggler holding two Indian clubs in one hand and one in the other hand.

a juggler waits to perform
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Man doing a flip over concrete in front of people.

The man is doing a flip.
++++++++++
true or not.
yes