Anchor: Monitoring performance, over time, is critical to program management and oversight.
Entailed: Monitoring performance is important to program management.
Contradiction: One must never monitor performance, it is harmful. 
Contradiction: A man is skateboarding alone at a park.
Contradiction: I couldn't make it to his wedding.
Contradiction: Emile Goudeau was at the top of the mountain.
Contradiction: No one is sure when Bergman decided Wigand mattered.