Anchor: Indeed, the laws of natural selection probably work against athletes these  Given the rigors of training schedules, it is possible that today's top athletes have fewer children than average.
Entailed: Top athletes don't have many children.
Contradiction: Top athletes have lots of kids.
Contradiction: A lady on a bike rides quietly.
Contradiction: A male has shoes with him.
Contradiction: Men huddle up on the football field.
Contradiction: It is necessary to enhance the weapon systems.