With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Basketball is played on horseback.
text_B: Michal Zach -LRB- born 21 March 1969 -RRB- is a Czech football manager .. Czech. Czech Republic. football. association football. He managed FC Slovan Liberec and Bohemians 1905 in the 2007 -- 08 Gambrinus liga .. Liberec. FC Slovan Liberec. Bohemians 1905. Bohemians 1905. FC Slovan Liberec. FC Slovan Liberec
not_related.