Anchor: bicyclist leading a pack of cars in a racetrack.
Entailed: bicycle leads cars
Contradiction: bird chased by cat
Contradiction: Men that were not well could stay as long as they wanted. 
Contradiction: More than half the Senate voted against putting restrictions on U.S. steel imports. 
Contradiction: I have a single cassette deck that I copy CDs with.
Contradiction: Some hikers are by a tree.