Anchor: More specifically, they emphasize the method's unique value in many complex situations of importance, such as studies of school desegregation, or economically distressed communities, or the Challenger tragedy.
Entailed: They emphasize the method's value in the Challenger tragedy.
Contradiction: The method is unsuccessful.
Contradiction: I haven't had any higher educational opportunities. 
Contradiction: The boats actually have modern conveniences and electric generators despite their appearance.
Contradiction: A man is riding a zebra.
Contradiction: He is a descendant of Eclipse, but maybe that doesn't have much meaning to a Mexican.