Anchor: Sometimes I fear I have underestimated the other boy.
Entailed: I fear that I have underestimated the other boy, sometimes.
Contradiction: Sometimes I fear that I overestimated that boy.
Contradiction: The dog is playing fetch on the beach.
Contradiction: A woman looks in a mirror to put on make up.
Contradiction: The boxes we make block water from being drained.
Contradiction: They become writers in less extreme cases.