Anchor: 20 In considering future living standards, doubling every 35 years represents a way to gauge whether future generations will enjoy an improvement comparable to that enjoyed by previous generations.
Entailed: One way to see if future Americans will have better living standards is to see if it doubles every 35 years.
Contradiction: It's impossible to say whether future Americans will have better living standards.
Contradiction: The girl is riding a tricycle.
Contradiction: I find finishing books to be challenging. 
Contradiction: The program commonly called legal aid Will gain 72 lawyers.
Contradiction: Some ballerinas are practicing.