With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Sindh borders a region of the Indian Ocean.
text_B: The 2011 Dalian Aerbin F.C. season is the 2nd season in club history , and the 1st season to compete in China League One .. League One. 2011 China League One. China League One. China League One
not_related.