With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Backstreet Boys released their 8th album in November 2013.
text_B: Stokes is an impact crater on Mars .. impact crater. impact crater. Mars. Mars. It is located on the Martian Northern plains .. It is distinctive for its dark-toned sand dunes , which have been formed by the planet 's strong winds .. It was named after George Gabriel Stokes .. George Gabriel Stokes. George Gabriel Stokes. Research released in July 2010 showed that is one of at least nine craters in the northern lowlands that contains hydrated minerals .. They are clay minerals , also called phyllosilicates .. clay. clay
not_related.