With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jenni Rivera lost at least one award in 2007.
text_B: The Kiev Zoo -LRB- Киівськии Зоопарк , Kyivskyi Zoopark -RRB- is one of the largest zoos in the former Soviet Union and the only zoo in Kiev , Ukraine .. Kiev. Kiev. Ukraine. Ukraine. zoo. zoo. Soviet Union. Soviet Union. Situated on about 40 ha , the zoo is cared for by 378 staff members and receives about 280,000 visitors annually .. zoo. zoo
not_related.