Anchor: A man is competing for a bicycle race while the other cyclists are directly behind him.
Entailed: A man is on a bicycle in a race.
Contradiction: A man is skateboarding in front of bicyclists.
Contradiction: The word transubstantiation is absent entirely from the discourse of the Roman Catholic Church. 
Contradiction: Boy eating ice cream
Contradiction: Two men building a model of a boat.
Contradiction: Cat is grooming itself on a tile floor