Premise & hypothesis.
A man in blue handles a fishing net on a boat.

A man in blue handles a fishing net, full of catfish, on a boat.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A man wearing headgear and boxing gloves is training with a woman wearing only boxing gloves.

A person is training with a woman in gloves.
++++++++++
true or not.
yes

Premise & hypothesis.
A person with spiky hair looks to the left.

The man has long hair.
++++++++++
true or not.
no