Anchor: Domestic investment in new factories and equipment can boost productivity of the nation's workforce.
Entailed: The workforce's productivity can be increased through domestic investment.
Contradiction: The nation's workforce is made less productive when domestic investment is increased.
Contradiction: Napoleon died of old age in the mid 1850s.
Contradiction: He could see that their teeth were white. 
Contradiction: Two men are working on a broken umbrella.
Contradiction: Descendants of slaves still live in Jamaica in two isolated pockets.