Text: As co-host of Crossfire for six and a half years (1989-1995), I am familiar with the  It's uncivilized, it's just show biz, it's not serious, you all talk at the same time, no one gets to finish a sentence, Pat Buchanan is a monster, Bob Novak is a monster, John Sununu makes me ill (and they hear similar complaints, apparently, about the liberal hosts).
Entailment: I was a co-host of Crossfire for six years.
Contradiction: I was a co-host of Crossfire for seventeen years.