Anchor: a boy wears a red coat.
Entailed: The boy is wearing a coat.
Contradiction: A boy wears a jacket without a coat.
Contradiction: petroleum products don't hurt the water table, but they are toxic when burned
Contradiction: A massive eruption in 1500 b.c. changed the entire climate of the earth.
Contradiction: The Roman chariot road still has the original paving stones.
Contradiction: A boy jump off a slide.