Anchor: The core issue is whether it is ethical for Americans to conduct Third World studies seeking therapies cheaper and perhaps inferior to our own.
Entailed: The cover issue talks about ethics in American studies.
Contradiction: The cover issue does not include Americans or the Third World.
Contradiction: The refusal rate was low in this study.
Contradiction: What is your feeling about it being different from regular college? 
Contradiction: She bought me a new pair of shoes every week.
Contradiction: At one point in time, France was not controlled by a single power.