Premise & hypothesis.
A man and woman are riding bikes on a street with a gray van visible in the background next to other cars.

A man and woman are riding bike on a street in a large city.
++++++++++
true or not.
yes

Premise & hypothesis.
Two people playing a game.

The two people are world-famous chess players, playing for the World Championships.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A young man making "peace signs" poses in front of armed policemen.

the man is giving the cops the finger
++++++++++
true or not.
no