Anchor: There was the sound of some one stirring on the floor below.
Entailed: The sound of some one stirring could be heard underneath.
Contradiction: Not a sound came from the floor below.
Contradiction: I should have let you know and made you wiser.  
Contradiction: A man sits at a restaurant table.
Contradiction: The man is strumming a guitar.
Contradiction: The golfers are playing golf.