Anchor: Nancy Pelosi is giving a speech.
Entailed: A speech is being presented.
Contradiction: Nancy Pelosi is singing in the shower.
Contradiction: Nancy Pelosi is talking on the phone.
Contradiction: The two people did a belly flop into the water.
Contradiction: Vaclav Havel, the president of Czechoslovakia in 1990, had been in New York in 1968.
Contradiction: One isn't sufficient enough