Anchor: (About 40 percent of all hardcovers ordered by the chains are returned.)
Entailed: Forty percent of the harcovers ordered by chains are returned. 
Contradiction: None of the hardcovers ordered by chains were returned. 
Contradiction: A boy rides a tractor.
Contradiction: That's something I hadn't considered.
Contradiction: There are 8 people
Contradiction: Sir Ernest Heavywether in a clumsy way.