Anchor: Ali (then Cassius Clay) created his persona knowingly and from nothing, and his defeat of Sonny Liston marked a turnaround in our culture.
Entailed: Ali's defeat of Sonny Liston was one for the ages.
Contradiction: Cassius Clay's win against Sonny Liston is unimportant.
Contradiction: The dog is completely dry.
Contradiction: Haven't saw it. 
Contradiction: He didn't care if I worried about it or not.
Contradiction: A person takes a photo.