Text: Slate 's worthless e-mail provider is displaying its characteristic incompetence (surely not treachery--that would suggest paranoia on my part and determination and skill on theirs--not likely), I received no reader responses to today's quiz, except a few that slipped through enemy lines, and those using a back channel I'd rather not discuss.
Entailment: Slate has a worthless e-mail provider.
Contradiction: Slate has a good e-mail provider.