With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ava DuVernay died in 1972.
text_B: Nove Mesto pod Smrkem -LRB- -LSB- ˈnovɛː ˈmɲɛsto ˈpotsmrkɛm -RSB- ; Neustadt an der Tafelfichte -RRB- is a small town in the Czech Republic , four kilometers from the border with Poland .. Czech Republic. Czech Republic. Poland. Poland. It has 4,050 inhabitants .. Singltrek pod Smrkem is the first single track trail system in the Czech Republic and Poland designed with the mountain biking experience in mind and with respect to nature .. Czech Republic. Czech Republic. Poland. Poland. The International Mountain Bicycling Association has designated Singltrek pod Smrkem as an IMBA Ride Center .. International Mountain Bicycling Association. International Mountain Bicycling Association. Ride Centers are the IMBA 's strongest endorsement of a trail experience .
not_related.