Text: Another dicey issue confronting Treasury Department enforcement officials is Internet gambling . Although federal law prohibits gambling by wire in the United States, and most authorities interpret that to mean that Internet gambling is illegal here, at least one online casino, Casino Royale, looks and feels like a virtual gambling emporium.
Entailment: Although online gambling is illegal, there are a lot of grey areas.
Contradiction: Nothing close to online gambling ever takes place because it is illegal.