Anchor: A man riding a bicycle performs a trick above a dirt mound.
Entailed: The man is doing bicycle tricks.
Contradiction: The man is walking on a dirt mound.
Contradiction: A singer is practicing in her bedroom.
Contradiction: The shirt is striped red.
Contradiction: A defendant can only have a trial by jury.  
Contradiction: Simulations show that future living standards will not be equal to those of the past.