Anchor: Implementation and enforcement usually requires years of litigation, leaving the fate of America's air to the uncertainties of the courtroom.
Entailed: Litigation is time consuming and results in air quality being determined by the courts.
Contradiction: Litigation is rapid in this case.
Contradiction: An old man is fishing.
Contradiction: This is the 2nd time we've made it through this place without having to shoot anything. 
Contradiction: A couple are standing near some trees looking for a skunk.
Contradiction: A person holds a camera.