With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: De Profundis was written.
text_B: The Yamaha Raptor 660R is a sport all terrain vehicle made by Yamaha with a 660cc , single cylinder , five-valve , four-stroke engine .. all terrain vehicle. all terrain vehicle. Yamaha. Yamaha Motor Company Ltd.. four-stroke engine. four-stroke engine. It is designed to perform well in every riding condition .. Yamaha sold the Raptor 660 from model year 2001 through 2005 .. Yamaha. Yamaha Motor Company Ltd.. The Raptor 660R was replaced in 2006 by the totally redesigned Raptor 700R -LRB- 686cc -RRB- .. Raptor 700R. Yamaha Raptor 700R. Specifications
not_related.