Anchor: Robert Wright  Anyone who doubts that male chimpanzees spend lots of time fighting over females should read Frans de Waal's book Chimpanzee Politics . Though the chimp colony de Waal studied was not in a purely natural setting, as were the chimps at Gombe studied by Jane Goodall, de Waal, for that very reason, got a clearer look at daily life within a colony than Goodall did.
Entailed: The chimp colony de Waal studied was not in a purely natural setting
Contradiction: The chimp colony de Waal studied was in a purely natural setting
Contradiction: Cyclists are waiting to start a bike ride.
Contradiction: We honeymooned in the US.
Contradiction: The color really does matter because you have no light. 
Contradiction: There are people in town.