Anchor: There is the simple fact of her wit.
Entailed: This is the simple fact that shows her wittiness.
Contradiction: There is the simple fact that she is not at all witty.
Contradiction: An old man working on art.
Contradiction: There was a ceremony which proclaimed Constantinople as the New Rome in a.d. 330.
Contradiction: Those are boring.
Contradiction: I went into her apartment.