Anchor: Two men on a dock talk to the passengers arriving in a red boat.
Entailed: A red boat is arriving at the dock.
Contradiction: The boat is black.
Contradiction: There are no arts by the likes of Picasso.
Contradiction: I had a great time with you and Cindy, Senator. 
Contradiction: A man wearing a cowboy hat and a pink shirt is riding a horse in a competition.
Contradiction: There is a person and a dog.