Anchor: A retrospective cumulative case study was conducted by the World Bank in its examination of four in-depth case studies of the effectiveness of educational programs.
Entailed: A retrospective cumulative case study to evaluate education programs.
Contradiction: A retrospective cumulative case study to evaluate the IQs of students.
Contradiction: People are sleeping in the wilderness.
Contradiction: The parts without singing are enjoyable.
Contradiction: A children's playground was erected in their place. 
Contradiction: All bets will be off if we discover a big scoop, like celebrity-on-celebrity murders!