With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Houston's economy has a broad tourist base.
text_B: Polina Igorevna Tsurskaya -LRB- Полина Игоревна Цурская , born 11 July 2001 -RRB- is a Russian competitive figure skater .. figure skater. figure skater. She is the 2016 Winter Youth Olympic champion , the 2015 -- 16 JGP Final champion and the 2016 Russian Junior National champion .. 2016 Winter Youth Olympic. Figure skating at the 2016 Winter Youth Olympics. 2016 Russian Junior National. 2016 Russian Figure Skating Championships. She is the former junior ladies ' record-holder for the highest short program score , free program score and combined total scores .
not_related.