With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Zinedine Zidane was a European singer.
text_B: Nikolay Hristozov may refer to  :. Nikolai Hristozov -LRB- born 1931 -RRB- , Bulgarian writer and poet. Nikolai Hristozov. Nikolai Hristozov. Nikolay Hristozov -LRB- footballer -RRB- -LRB- born 1982 -RRB- , Bulgarian footballer
not_related.