Anchor: A boy on a skateboard rides down a red pole.
Entailed: A kid is skateboarding.
Contradiction: A boy is swimming in a lake.
Contradiction: TI profit margins are unshakable. 
Contradiction: He believed that the use of certain drugs would cause people to be indifferent about control by their political leaders. 
Contradiction: We never go down there.
Contradiction: He is not very popular right now.