Anchor: As people live longer and have fewer children, there will be relatively fewer workers supporting each retiree unless retirement patterns change.
Entailed: In the future less workers will be supporting each retiree.
Contradiction: There is no problems foreseen with the drop in workers.
Contradiction: I beat him.
Contradiction: tennis players are playing a match
Contradiction: A young man somersaults on the grass.
Contradiction: It doesn't say anything like that in the letter.