Anchor: A group of roller derby athletes dressed in black and skating the rink.
Entailed: a group of athleste in a rink
Contradiction: a group of athletes live in the sewer
Contradiction: A white man and black man are fighting in the street.
Contradiction: the United States has the option to increase national saving.
Contradiction: The passage was full
Contradiction: When they're available the most unsuspecting people fly off the handle.