Premise & hypothesis.
A person wearing a white jumpsuit is riding a fast moving motorcycle on a racetrack.

A woman is racing her motorcycle.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A woman and a man holding a small boy smile while standing in front of a decorated christmas tree with gifts under it.

The family is celebrating its first Christmas.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Several adults and children are either sliding down, or waiting at the bottom of a very tall yellow slide.

There is only one person present.
++++++++++
true or not.
no