Anchor: Sometimes, however, it is not possible to answer the evaluation question using case studies, if the program is diverse and the user needs national generalizability.
Entailed: Case studies are not sufficient when the program is diverse.
Contradiction: Case studies are always sufficient to answer the evaluation question.
Contradiction: All evaluations diverged from the questions that were asked. 
Contradiction: Females are doing activities indoors.
Contradiction: A man is wearing a tuxedo.
Contradiction: There is someone riding a bike.