Anchor: A rock concert is taking place.
Entailed: Musicians perform for an audience.
Contradiction: A classical musician plays for a small audience.
Contradiction: The efforts to use frequent flyer miles to increase government costs could affect the ability to negotiate savings with airlines.
Contradiction: My in-laws have many connections with the airline companies.
Contradiction: A person in black is all alone.
Contradiction: A biker is on a bike