Anchor: A large group of people wearing life jackets canoe down a river in a wooded ravine.
Entailed: The people are near the water.
Contradiction: The people are in the desert.
Contradiction: people have fell off the mountain and died
Contradiction: The men are playing a game.
Contradiction: He offered no refuge during the war.  
Contradiction: The male's nose honk is used in times of alarm.