Anchor: Friedman PD, McCullough D, Chin MH, Saitz R. Screening and interventions for alcohol  a national survey of primary care physicians and psychiatrists.
Entailed: Primary care physicians were surveyed about their screening for alcohol.
Contradiction: Physicians were never asked about their screening protocols. 
Contradiction: The Sox have never played the Indians.
Contradiction: It's like twins separated at birth.
Contradiction: I just finished reading a biography. 
Contradiction: A human walking.