Anchor: (If this national prerogative weren't preserved, Helms and company would be the first to object.)
Entailed: Helms would object if the national prerogative was not preserved.
Contradiction: The national prerogative will not be preserved and Helms won't mind.
Contradiction: Similarly, Gore never smoked marijuana and never had a laborious job.
Contradiction: Two young men are eating.
Contradiction: I had no money to pay that bill.
Contradiction: There is a benchmark for SO2 emissions.