Anchor: Was it not plain to you that I was speaking of two entirely different persons?"
Entailed: I was not speaking about the same person both times.
Contradiction: I was speaking about the same person.
Contradiction: A group of Asians are walking down a street practicing karate moves.
Contradiction: Do you?
Contradiction: People are studying quietly in a library.
Contradiction: Cruises are available on boats that carry up to 20 people.