Anchor: A biker in a red, white, and blue shirt rides past a lake and some people.
Entailed: A person is riding a bike.
Contradiction: The person is playing baseball.
Contradiction: None of the equipment for the systems is going to be unique to the site or a specific project. 
Contradiction: I told him the truth.
Contradiction: Myna birds make muffins.
Contradiction: A man points at two women while standing.