Premise & hypothesis.
A pregnant protester holding up a pro-America sign.

A protester is pregnant
++++++++++
true or not.
yes


Premise & hypothesis.
A person is climbing up a rock.

A person is climbing.
++++++++++
true or not.
yes


Premise & hypothesis.
A group of four children are playing a game outside and one of the children appears to have just thrown something.

A ball was just thrown by one of the children.
++++++++++
true or not.

it is not possible to tell