Anchor: A teenage boy gives another teenage boy a piggyback ride in a forest.
Entailed: The boys are playing outside.
Contradiction: The boys are fighting.
Contradiction: The boy and his family are hiking in the mountains.
Contradiction: There was not much else for them to do there.
Contradiction: The temple once had to double as a school as well. 
Contradiction: There are internal controls to help a company gauge its achievements.