premise: The above obligations shall not apply or shall cease to apply to such of the Information as the Recipient can show to the reasonable satisfaction of the Donor: 2.1 has become public knowledge other than through the fault of the Recipient; or 2.2 was already known to the Recipient prior to disclosure by the Donor; or 2.3 has been received from a third party who did not acquire it in confidence from the Donor or from someone owing a duty of confidence to the Donor.