Premise & hypothesis.
A young man, with his back to the camera, is standing with his bike near a wooden fence.

The young man is taking some pictures.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A man rides his dirt bike down a rocky trail.

A man rides his dirt bike
++++++++++
true or not.
yes

Premise & hypothesis.
A man wearing a balloon hat is crossing a street.

The man is wearing a baseball cap.
++++++++++
true or not.
no