Anchor: If I receive $5 million, I'm rich.
Entailed: I'm well-off if I get 5 million dollars.
Contradiction: If I receive a million dollars, I'm poor.
Contradiction: There are no paintings by Veronese in the collection. 
Contradiction: Las Vegas has had over 20,000 hotel rooms added.
Contradiction: A black dog is laying in the grass.
Contradiction: The dog is on the lawn.