Anchor: Sightseeing for tourists is most rewarding by rental car, boat, or both.
Entailed: The best site seeing is done by boat and car.
Contradiction: The best way for tourists to sightsee is by plane.
Contradiction: The five people are in a rowboat.
Contradiction: I enjoy watching MacNeil Lehrer news hour on public television.
Contradiction: It does not apply to any of those degrees. 
Contradiction: A young boy climbing in a children's play structure.