Anchor: The large man's arm, trapped within the merchant's interlocked forearms, snapped at the elbow.
Entailed: The trapped man was large.
Contradiction: The man pulled himself free before his arm could give. 
Contradiction: People are swimming.
Contradiction: Even after nine years, the Buick was still going strong. 
Contradiction: Two girls look in the mirror.
Contradiction: Two people are carrying a lot of things.