With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Usain Bolt failed to finish first in every 100 meter dash in which he participated.
text_B: Mezhdu denya i noshtta -LRB- Между деня и нощта , pronounced -LSB- mɛʒˈdu ˈdɛnjɐ i nuʃˈtːɑ -RSB- -RRB- is the first video release by Balkandji .. Balkandji. Balkandji. It contains four video clips by the band and a recording of their performance on the 2003 festival `` Slantse / Luna '' in Trigrad .. Trigrad. Trigrad. It also contains an information about the band members , a gallery of pictures and an interview with the band .. The interview and the information are in Bulgarian .. The name in English means `` Between day and night '' .. It is freely distributed under the Creative Commons Attribution Licence .. Creative Commons. Creative Commons
not_related.