Premise & hypothesis.
Three children are running in front of a large group of ducks.

Children running in a park.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A dog gets ready to catch a Frisbee.

The dog is playing.
++++++++++
true or not.
yes

Premise & hypothesis.
An old man smiling at the camera in front of a rocky, barren patch of land.

A man is smiling because he is fifty feet tall and can crush anyone.
++++++++++
true or not.
no