Anchor: A boy is doing a skateboarding trick in the air.
Entailed: A boy is riding a skateboard.
Contradiction: A boy is rollerskating.
Contradiction: A biker filling up his tires.
Contradiction: And the others believed that only thistorical (total) costs should be used.
Contradiction: Critics are non-existent in today's day and age. 
Contradiction: The man likes music.