Anchor: A pair of twins in a playful fight.
Entailed: Twins are play fighting.
Contradiction: Two children are fighting.
Contradiction: I aim to retire by the time I'm 45. 
Contradiction: In its first year of limited distribution, Go-Gurt sold $37 million of product.
Contradiction: Sir Ernest was discussing his thoughts about the prisoner over the phone. 
Contradiction: Children are learning to care for newborn infants.