Premise & hypothesis.
A man on a dirt bike in midair competing.

A man is outside on his dirt bike.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
Two men read directions outdoors.

Two men riding bikes outdoors.
++++++++++
true or not.
no

Premise & hypothesis.
Small white dog with spot on back leaping in air with football in mouth with small boy and man watching.

The small dog is white.
++++++++++
true or not.
yes