Anchor: In addition, the central groups provided related explanations, guidance, and support to business units.
Entailed: The central groups provided explanations to business units.  
Contradiction: No group provided any explanations to business units.  
Contradiction: The FCC forgot to prepare an Initial Regulatory Flexibility Analysis.
Contradiction: I don't know why people should register when they could easily use social security numbers.
Contradiction: Dog chews on rubber bone.
Contradiction: The two men are using leg muscles.