Anchor: This was 1971, not 1917!
Entailed: This was the year 1971, not the year 1917.
Contradiction: This was 1917, and 1971 wouldn't come around for another fifty years.
Contradiction: I wouldn't want to start swimming, since I am doing enough aerobic activity already.
Contradiction: A man has a white shirt.
Contradiction: The bride left the groom at the alter and ran away.
Contradiction: A lady is playing music.