Anchor: Several current publications have begun to remedy this lack of prospective, randomized trials.
Entailed: There are trials that are not randomized and lack prospectiveness. 
Contradiction: There are publications that have reported that there is a sufficient number of randomized trials.
Contradiction: Performance elements are always distinct from performance plans.
Contradiction: The book was better than I thought.
Contradiction: the two baseball teams are shaking hands
Contradiction: There were two naked women holding each other behind him.