UBL was the Oswald (patsy).
Interesting
My gut tells me you are correct regarding a Section 11A of a document and that B can equal 2:2 but it seems the document we are hunting for is CLASSIFIED (CLAS).
If so, this Q drop will be Future Proves Past (drop confirmed by future release of information).
To contrast, when Q states something is Open Source I believe the information has been published in the public domain.
Who transports barrels of oil?