Anchor: The cab drew up outside the tube station.
Entailed: The cab pulled up outside the tube station.
Contradiction: The cab did not pull up.
Contradiction: Think harder about it.
Contradiction: I have a daughter, I can understand
Contradiction: The results of the poll was that campaign finance reform is the most important thing to voters. 
Contradiction: The art of papyrus-making was lost for a time in Egypt.