With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Amitabh Bachchan was referred to as "Big B".
text_B: `` Oj , svijetla majska zoro '' -LRB- Montenegrin Cyrillic  : „ Ој , свијетла мајска зоро '' , trans .. Montenegrin Cyrillic. Montenegrin language. `` Oh , Bright Dawn of May '' -RRB- is the official national anthem of Montenegro adopted in 2004 .. anthem. anthem. Montenegro. Montenegro. Before becoming the anthem , it was a popular folk song , with many variations of its text .. anthem. anthem. The oldest one is dated to the 2nd half of the 19th century , known as `` Oh , Bright Dawn of Heroism , oh ! ''. The oldest one is dated to the 2nd half of the 19th century. Oj, svijetla majska zoro#History#Original lyrics. , a popular Montenegrin folk song .
not_related.