Anchor: estimating the program's effect on changes in physical, social, or economic conditions, they seek evidence of the extent to which the program itself is the cause of those changes.
Entailed: The program had an effect on economic conditions.
Contradiction: The program had no effect on economic conditions.
Contradiction: The girl is playing with cats.
Contradiction: I got a big collection of examples.
Contradiction: You heard Mr. Inglethorp. 
Contradiction: England will become a place of anarchy.