Premise & hypothesis.
Fast fingers fly upon the lively keys belonging to this true to sound Yamaha keyboard.

Fingers performing the Mario theme song on keyboard.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A boy, wearing a gray shirt and black pants, is bowling with a black bowling ball with only two pins left to knock down.

A boy has a ball
++++++++++
true or not.
yes

Premise & hypothesis.
The policeman is having note in his hand.

The policeman has two free hands.
++++++++++
true or not.
no