Anchor: Nobody really knows how big a problem this is, and the extent will surely differ from area to area.
Entailed: No one has an idea of the extent of this problem.
Contradiction: This problem has the same effects on all areas.
Contradiction: Poland has become more expensive than Western European countries after the fall of Communism.
Contradiction: Greyhounds are racing.
Contradiction: The people are getting ready to swim
Contradiction: a woman bowls