Anchor: A bunch of people in racing gear and helmets racing bicycles around a corner on wet pavement.
Entailed: They are young.
Contradiction: A single bicycle rider drives his dirt bike up a hill.
Contradiction: They are old people.
Contradiction: The bicycles are going over 100 miles per hour.
Contradiction: A bunch of people race bicycles on a dirt trail.
Contradiction: The people are indoors.