Anchor: America in the 1950s was a middle-class society in a way that America in the 1990s is not.
Entailed: 1950's America is different from the 1990's America. 
Contradiction: Not much has changed between the periods of 1950 to 1990 in America. 
Contradiction: His name is John Par.
Contradiction: The man is speaking.
Contradiction: Cotton and Wool.
Contradiction: The woman has one head.