Anchor: For Spain the 19th century was a bitter slide from imperial might to the status of a has-been.
Entailed: Spain slid from their position of power.
Contradiction: In the 19th century, Spain rose to an imperial power.
Contradiction: you can take out a sentence without making any other revisions
Contradiction: Slate goes through changes.
Contradiction: The man was driving to work through the tunnell
Contradiction: Two children in front of a clown.