premise: The following shall not be considered Confidential Information:  (a) information that was in the public domain at the time it was disclosed;  (b) information that can be demonstrated by documentary evidence to have been known to the Receiving Party at the time of disclosure with no obligation of confidence; and  (c) information that becomes known to the Receiving Party from a source other than the Disclosing Party, as demonstrated by appropriate documentation, without breach of any obligation of confidence by the Receiving Party; for the avoidance of doubt it is clarified and agreed that the combination of any two materials or use thereof for a certain purpose shall be considered "Confidential Information" to the extent that such specific combination for such specific purpose is not excluded from the Confidential Information under the provisions of this Section 1.2, whether or not the individual, uncombined materials or use thereof are so excluded.