Anchor: Maybe these two should have lunch sometime.
Entailed: It is possible they could have lunch.
Contradiction: It is not possible that they could have lunch together. 
Contradiction: they are on mars
Contradiction: A club scene with people dressed as Santa.
Contradiction: She was never involved in Different Strokes and was never arrested.
Contradiction: It took black men a long time to be paid the same as white men for the same job.