Anchor: Musicians performing for a audience.
Entailed: There are people watching the musicians.
Contradiction: The musicians are performing in front of nobody.
Contradiction: Getting an early start each day is advisable, if you choose to go during the winter months. 
Contradiction: Approval must be granted for overtime before the work has been performed when feasible.
Contradiction: "Stevenson, your expert, discovered that phlogiston can quench rocket flames." 
Contradiction: Statue of a woman.