Anchor: Dentists have to make patients want adult orthodontics in a way physicians don't have to make patients want a quadruple bypass.
Entailed: Dentist are obliged to convince adults to desire orthodontics. 
Contradiction: Dentists have an easy time in convincing adults to get orthodontics.
Contradiction: You are free to leave, he said before walking alone to his car.
Contradiction: People outside hiking.
Contradiction: Paradise can be seen in the Louvre in Rome.
Contradiction: There is a table.