With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Silk was the major trade item on the Silk Road.
text_B: Lost is the second album by American rock band RTZ .. RTZ. RTZ ( band ). American. United States. rock. Rock music. It was released in 1998 by MTM Music and Avalon Japan .. It was reissued in 2000 with a bonus track , and again in 2005 under the title Lost in America .
not_related.