Anchor: Just short of two dozen men, six on horseback and the remainder on foot.
Entailed: A group of nearly two dozen men were travelling with six riding horseback and the rest going by foot. 
Contradiction: All of the two dozen men rode hroses. 
Contradiction: The woman is american.
Contradiction: It is impossible to sell a car without air-conditioning here.
Contradiction: a  dog is sitting in a field.
Contradiction: There are two people talking.