Anchor: For example, if the purpose of the study is illustrative, an appropriate basis for site selection could be typical, representative, or cluster; the case studies would be conducted concurrently with other methods used in the main study; prestructuring or guidance to the evaluators in the field would be low to moderate to permit the thickness and richness of insights needed; data could be qualitative only or both qualitative and quantitative; the case studies probably would be analyzed within sites only; and the reporting would probably be narrative.
Entailed: There are different methods related to the execution of the study.
Contradiction: It's a very simple study with only one approach.
Contradiction: Three back belts are practicing martial arts.
Contradiction:  They added it to tires, gas, cigarettes, and liquor. I don't care too much because I don't smoke or drink, but it doesn't seem too fair. 
Contradiction: I am not a big fan of fiction books.
Contradiction: There is more we are liberated from.