61.   Brebisson refused to specify which American carriers Air France is talking to and the exact nature of the agreements the airline wants.

62.   Chang was coy about the exact nature of the leg problem.

63.   Gibbs said the exact nature of his protest was not clear.

64.   He said the exact nature of her illness would be determined later in the day.

65.   He said the exact nature of the violence was unclear.

66.   His gall bladder was not removed, but the officials would not disclose the exact nature of the operation.

67.   His doctors recommended that he undergo a lung endoscopy to determine the exact nature of his illness.

68.   Humadi did not say which of the two men was hospitalized or give the exact nature of his ailment.

69.   In Washington, a Pentagon spokesman said Thursday that initial indications suggested an underground explosion, but that the Pentagon was unable to determine its exact nature.

70.   In Washington, the Pentagon had said Thursday that initial indications suggested an underground explosion, the exact nature of which had not been determined.