Anchor: Many researchers who write case studies use qualitative data because they believe them to be richer, more insightful, and more flexible than quantitative data.
Entailed: Many researchers write case studies using qualitative data because it is more flexible.
Contradiction: Many researchers write case studies using quantitative data because it is more flexible.
Contradiction: A man in a blue shirt and a man in a yellow shirt lie on the ground of a desert highway.
Contradiction: I could see where Lincoln was coming from and I agreed with it. 
Contradiction: The two dogs are fighting over a stick
Contradiction: There are young people at a park