Text: The broader lesson we're supposed to learn, then, is that it was precisely the takeover mania of the 1980s that created the lean, efficient profit machines of the 1990s.
Entailment: We should learn that the takeover mania of the 80s had an effect on the 90s economy.
Contradiction: The takeover mania of the 80s had no effect on business in the 90s.