Premise & hypothesis.
A man with a backpack is observing an alligator.

The man is at a zoo
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A man on a surfboard riding a giant wave.

Surfboarders are in the water
++++++++++
true or not.
yes

Premise & hypothesis.
A brown, black and white dog is running through a large field with its mouth open.

A pet is sitting on a couch.
++++++++++
true or not.
no