With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jessica Chastain is in the music industry.
text_B: Orsini-Rosenberg -LRB- also Ursin-Rosenberg -RRB- is the name of an old Austrian noble family .. Austrian noble. Austrian nobility. It originally sprang out from the Graben family -LRB- an apparent or illegitimate branch of the House of Meinhardin -RRB- from Schloss Alt-Grabenhofen near the city of Graz .. Graben family. House of Graben von Stein. illegitimate. Legitimacy ( law ). House of Meinhardin. Meinhardiner. Schloss Alt-Grabenhofen. Schloss Alt-Grabenhofen. Graz. Graz
not_related.