Anchor: Paul Samuelson had good reasons for beginning his textbook with Keynesian analysis.
Entailed: Paul had good reason for the Keynesian analysis in his textbook.
Contradiction: Paul put the Mayans in the front of the textbook.
Contradiction: People inside.
Contradiction: Value-added activities should fulfill customer expectations.
Contradiction: Alcoholics experience fewer injuries on average requiring medical care.
Contradiction: I have no knowledge of fishing.