With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: WeChat is a Chinese phone app.
text_B: The women 's ` Individual Aero Kickboxing with Step ' category involved seven women from five countries all based in Europe .. Europe. Europe. Each contestant went through five performances -LRB- 1.5 to 2 minutes each -RRB- with the totals added up at the end of the event .. The joint gold medallists were Slovenia 's Manja Simonic and Croatian Valerija Lukani who had equal scores at the end of the event .. Croatian. Croatia. Slovenia. Slovenia. Also with equal scores were Petra Kmetec from Slovenia and Hungary 's Marianna Hegyi , both claiming silver .. Slovenia. Slovenia. Finally , the bronze medal went to Italian Laura Fiori , who would also claim a bronze in the other individual Aero Kickboxing category .. Italian. Italy
not_related.