Anchor: They also prefer the use of highly controlled diagnostic and demographic groups in order to obtain unambiguous answers to isolate the active ingredient of treatment efficacy.
Entailed: They like to use well-controlled diagnostic groups.
Contradiction: They use random groups.
Contradiction: Three people, all adequately supplied, are bobsledding
Contradiction: A group of people are white water rafting
Contradiction: No consideration was taken to minimize the impact on small entities.
Contradiction: The man is playing music.