Anchor: She had never spoken to him before, during, or after the encounter.
Entailed: They had never spoken.
Contradiction: She talked to him every day.
Contradiction: Suppose you had an estate of unlimited funds and no debts.  
Contradiction: The women are dressed up.
Contradiction: We should make sure that white collar criminals receive the light prison sentences that they deserve.
Contradiction: Robots are half-built.