Anchor: Our understanding of science, technology, and markets has improved since the Clean Air Act was passed in 1970.
Entailed: Since the Clean Air Act was passed, we have understood science, technology and markets better.
Contradiction: Since the Clean Air Act was passed, we have not understood science, technology and markets.
Contradiction: The views are terrible, but at least it's easy to get around.
Contradiction: Not less than half of his men.
Contradiction: The door was open.
Contradiction: Two kids peek their head from a pile of leaves on a beautiful fall day