Anchor: Drug-policy experts and social scientists seem to agree that social and cultural factors are driving up teen drug use.
Entailed: Drug policy experts and social scientists agree on the causes of increased teen drug abuse.
Contradiction: Social scientists agree that teen drug abuse has been decreasing.
Contradiction: Six people are sitting on stage.
Contradiction: A group of females.
Contradiction: It won't be time for another few hours. 
Contradiction: He saw something.