Anchor: One of the boys, the smallest, smiled at Susan.
Entailed: A boy smiled at Susan.
Contradiction: Susan saw a frown on the boy's face.
Contradiction: The leader disliked religion, but let the people in anyway to show he was nice.
Contradiction: The lab contained tubes filled with fleshy bodies. 
Contradiction: There is a place in Africa that is more diverse.
Contradiction: Spain was not strong economically or politically.