Anchor: The mines were the key to this growth but the mines are a rough trade.
Entailed: The mines are necessary but difficult. 
Contradiction: The mines are not important. 
Contradiction: It's bad for the park to be unsubsidized.
Contradiction: Helm's spokesman cast his boss as the victim.
Contradiction: The man is napping on the couch.
Contradiction: This problem was swiftly resolved when McCain attended the lunch as a guest of U.S.