Anchor: The effectiveness of alcoholism screening in an ambulatory care setting.
Entailed: There is screening for alcoholism in ambulatory care settings.
Contradiction: There is never screening for alcoholism in ambulatory care settings.
Contradiction: He was standing on the train platform.
Contradiction: Robert Boyers condemns John Updike in the New Republic, for setting his sci-fi novel Toward the End of Time in the aftermath of a horrific conflagration.
Contradiction: The man is burning the flag.
Contradiction: A little person wearing an adult-size cap is laughing and enjoying a popsicle.