With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Ilkhanate was ruled by the masses for nearly ten years.
text_B: The Gesamtkatalog der Wiegendrucke -LRB- abbreviated as GW -RRB- is an ongoing project of the Staatsbibliothek zu Berlin to publish a union catalogue of incunabula .. abbreviated. Abbreviation. Staatsbibliothek zu Berlin. Berlin State Library. incunabula. Incunable. The Gesamtkatalog der Wiegendrucke is available in part in print and in its entirety -- in draft form -- via an online database .. draft. Draft document. online database. online database. The first volume of the print catalogue was published in 1925 -LRB- Leipzig  : Anton Hiersemann -RRB- and the most recent volume was completed in 2009 , extending to the entry Horem .. Leipzig. Leipzig. Anton Hiersemann. Anton Hiersemann
not_related.