With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Journey was named the worst American rock band in a 2005 USA Today opinion poll.
text_B: Hirudo medicinalis , the European medicinal leech , is one of several species of leeches used as `` medicinal leeches '' .. Hirudo. Hirudo. species. species. leeches. leeches. Other species of Hirudo sometimes also used as medicinal leeches include -LRB- but are not limited to -RRB- H. orientalis , H. troctina , and H. verbana .. Hirudo. Hirudo. species. species. leeches. leeches. H. orientalis. Hirudo orientalis. H. verbana. Hirudo verbana. The Mexican medical leech is Hirudinaria manillensis , and the North American medical leech is Macrobdella decora .. Hirudinaria manillensis. Hirudinaria manillensis. Macrobdella decora. Macrobdella decora
not_related.