Text: As you know, the United States General Accounting Office (GAO) has been engaged in an ongoing effort to obtain certain narrowly defined, factual information concerning the development of the National Energy Policy proposal from Vice President Cheney in his role as Chair of the National Energy Policy Development Group (NEPDG).
Entailment: GAO has been repeatedly attempting to obtain energy information from Dick Cheney.
Contradiction: Cheney is the head of GAO.