Anchor: It is not always clear whether there were long-term positive outcomes from these trials since referral has been the outcome variable most often studied.
Entailed: You can not be sure whether anything positive came from the trials.
Contradiction: Strong evidence shows that the trials were beneficial.
Contradiction: A man stands on top of a wall.
Contradiction: A black and white dog are in a yard
Contradiction: They are asleep on the sofa.
Contradiction: A family is enjoying time in the pool.