Anchor: I'm not sure I have, said Tuppence darkly.
Entailed: Tuppence was uncertain that she had done something.
Contradiction: Tuppence is friendly and never speaks in a dark tone. 
Contradiction: Two men walking down the street, the younger helping the older.
Contradiction: I did not imply that.
Contradiction: Lawyers will never do any of their work for free.
Contradiction: Divide it into a few parts.