With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Soundgarden had disbanded permanently the year before Alice in Chains formed.
text_B: Leigh Mall is a shopping mall located in Columbus , Mississippi .. The mall was constructed in 1973 , and is marketed by Sterling Properties .. It underwent renovations in 1998 and again between 2004 and 2005 .
not_related.