Anchor: About an hour had passed when he heard the key softly turned, and the door opened.
Entailed: The door opened softly after an hour had passed.
Contradiction: The man heard voices in the hall before the key turned and the door swung open.
Contradiction: It is much easier to appreciate the cold when you are older.  
Contradiction: The Office of the Appellate Defender handles the appeals.
Contradiction: It's very closeminded and hates different ideas.
Contradiction: The girls are all sitting at the same table.