Premise & hypothesis.
A little boy with toy microphone and guitar pretends to play music.

Scott Joplin as a child.
++++++++++
true or not.
no

Premise & hypothesis.
The boy has his mouth open

The boy is yawning.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A person wearing Rollerblades slides down a handrail.

A person wearing ice skates performing a trick.
++++++++++
true or not.
no