Anchor: It is uncertain what impact this assumption will have on net changes in surplus.
Entailed: We are not sure yet.
Contradiction: We know that there will certainly be no impact whatsoever.
Contradiction: the musician is asleep
Contradiction: People are busily watching a fireworks display.
Contradiction: The slaves toiled on, oblivious to their surroundings.
Contradiction: Alice Mayhew left the stories about Phil Gramm and Lamar Alexander mostly unused.