Text: Other participants pointed out that not allowing the CEO to also serve as the chairman of the board of directors does not guarantee that problems will be avoided if the board lacks an independent spirit to question management, citing such examples as Enron, Global Crossing, and WorldCom, all of which had a separate CEO and chairman.
Entailment: Allowing a CEO to act as a chairman of the board can lead to a conflict of interest.
Contradiction: Enron is a good example where having separate CEOs and chairman of the board works out,