Anchor: If we ever prove that George W. Bush has lied to us at our expense, then this will be a factor that should be weighed in determining his ability to truly lead this country.
Entailed: George W. Bush is the leader of the country.
Contradiction: George W. Bush is the name of Obama's pet ferret.
Contradiction: the men are blind and are sleeping
Contradiction: A man plays bowling.
Contradiction: A man is cooking pasta in a pot.
Contradiction: One suspects that this is not the example that actually worries Alterman.