| http://www.w3.org/ns/prov#value | - (B) When necessary to acquaint the applicant with the substance of a classified document, the classifying authority, on the request of the DRB, shall prepare a summary of or an extract from the document, deleting all references to sources of information and other matters, the disclosure of which, in the opinion of the classifying authority, would be detrimental to the national security interests o
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