Anchor: My trouble is that I could never keep my mouth shut.
Entailed: My problem is that I was always talking.
Contradiction: My trouble was that I did not say a word.
Contradiction: He had a broken arm from the impact. 
Contradiction: Rodin, Giacometti, and Henry Moore were all artists.
Contradiction: It was actually opened sometime in the 18th century.
Contradiction: It's perfect because of Regis.