Anchor: He recommended that future research evaluate whether using physicians or ED staff is more cost effective than using specially hired staff.
Entailed: It should be evaluated in future research if physicians or ED are more cost effective.
Contradiction: Future research is not necessary.
Contradiction: The volleyball teams are having lunch.
Contradiction: I keep thinking that a beater would do it greatly
Contradiction: The dog is black.
Contradiction: The man in brown is holding a game accessory