Premise & hypothesis.
A boy wearing a gray jacket and shorts brushes sauce on several pieces of meat on a grill.

A boy brushes sauce on meat
++++++++++
true or not.
yes

Premise & hypothesis.
Four students are sitting on the floor by a model volcano.

Four students are learning about volcanos.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Someone is grilling a variety of vegetables and meat.

A person grilling food for a barbecue that evening.
++++++++++
true or not.
it is not possible to tell