Premise & hypothesis.
An older guy is playing chess with a young boy.

Two people of different ages are competing at a game.
++++++++++
true or not.
yes

Premise & hypothesis.
Several young people, including a young woman in a green and pink dress, sing and dance.

None of the people are wearing a green and pink dress.
++++++++++
true or not.
no

Premise & hypothesis.
A girl stands on a pier as a ferry comes in.

There is a girl in a red dress standing on the pier.
++++++++++
true or not.
it is not possible to tell