Anchor: Decorum and good breeding naturally enjoined that our demeanour should be much as usual, yet I could not help wondering if this self-control were really a matter of great difficulty. 
Entailed: I couldn't help but wonder if it was hard to have self-control.
Contradiction: I knew he had great self control.
Contradiction: A boy runs from the beach.
Contradiction: the men decided to go out
Contradiction: They don't give discounts.
Contradiction: For people of all ages and those who enjoy science.