Anchor: The furry brown dog is swimming in the ocean.
Entailed: A dog is swimming.
Contradiction: A dog is running around the yard.
Contradiction: A man is rolling around in the field.
Contradiction: I am of the opinion that you went to the Red Cross Hospital's dispensary with another person on July 17th. 
Contradiction: children are wearing speedos
Contradiction: Rulemaking involves many dimensions.