Anchor: Such comparisons of when key actions occurred, how well (or poorly) they were carried out, and what influenced both timing and quality of performance can be particularly helpful in case studies of program implementation.
Entailed: Comparisons of actions can be very helpful in case studies of program implementation. 
Contradiction: Comparing actions is not helpful at all in a case study.
Contradiction: The two men are sitting on the couch watching tv.
Contradiction: Tommy said this was the campaign plan.
Contradiction: The man does not have a guitar.
Contradiction: There isn't much there.