Anchor: Nevertheless--the nevertheless paragraph ineluctably follows the to be sure one--it would be a mistake to try to turn back the clock.
Entailed: Attempting to turn back the clock would be a mistake.
Contradiction: Trying to turn back the clock would be the best idea they've had this entire time.
Contradiction: Some people are crying and upset at the party.
Contradiction: There are several people and bikes in this picture.
Contradiction: A man is napping.
Contradiction: children play music for a conducter