Anchor: By 2,000 b.c. , these timid, gentle nomads hunting with bow and arrow were driven back from the coasts by waves of sturdy immigrants arriving in outrigger canoes equipped with sails.
Entailed: Nomads were driven back from the coasts by immigrants arriving. 
Contradiction: Nomads and immigrants lived side by side on the coasts.
Contradiction: A woman is
Contradiction: A man has a suitcase.
Contradiction: the ground is dry and dusty.
Contradiction: The motorcycle racer, #75, rides a black and ride bike.