With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Novak Djokovic is Serbian and successful.
text_B: Novak Djokovic -LRB- Новак Ђоковић , Novak Đokovic , -LSB- noʋaːk dʑoːkoʋitɕ -RSB- ; born 22 May 1987 -RRB- , often referred to by the hypocorism Nole , is a Serbian professional tennis player who is currently ranked world No. 2 in men 's singles tennis by the Association of Tennis Professionals -LRB- ATP -RRB- .. hypocorism. hypocorism. tennis. tennis. Association of Tennis Professionals. Association of Tennis Professionals. He is considered one of the greatest tennis players of all time .. tennis. tennis. Djokovic holds the highest match winning rate -LRB- 82.8 % -RRB- in the Open Era , as of May 2017 .. Djokovic has won 12 Grand Slam singles titles , the fourth most in history , and held the No. 1 spot in the ATP rankings for a total of 223 weeks .. Grand Slam. Grand Slam ( tennis ). fourth most. List of Grand Slam men's singles champions#Most Grand Slam singles titles ( 5 or more ). No. 1. List of ATP number 1 ranked singles tennis players. In majors , Djokovic has won six Australian Open titles , three Wimbledon titles , two US Open titles and one French Open title .. Australian Open. Australian Open. Wimbledon. The Championships, Wimbledon. US Open. US Open ( tennis ). French Open. French Open. In 2016 , he became the eighth player in history to achieve the Career Grand Slam ; by winning the 2016 French Open , Djokovic became the third man to hold all four major titles at once , the first since Rod Laver in 1969 , and the first ever to do so on three different surfaces .. Grand Slam. Grand Slam ( tennis ). 2016 French Open – Men's Singles. French Open. French Open. Career Grand Slam. Grand Slam ( tennis )#Career Grand Slam. 2016 French Open. 2016 French Open – Men's Singles. Rod Laver. Rod Laver. Djokovic has won an all-time record of 30 Masters 1000 series titles , tied with Rafael Nadal .. Masters 1000. ATP World Tour Masters 1000. Rafael Nadal. Rafael Nadal. Djokovic 's records include breaking the single-season record with six masters titles in 2015 , winning 31 consecutive ATP World Tour Masters 1000 series matches , playing in the finals at all nine ATP Masters 1000 tournaments -LRB- shared with Roger Federer and Nadal , and being the only player to win eight of the nine events -LRB- and at least twice -RRB- .. ATP World Tour. ATP World Tour. 2015 ATP World Tour Finals – Singles. Masters 1000. ATP World Tour Masters 1000. ATP World Tour Masters 1000. ATP World Tour Masters 1000. Roger Federer. Roger Federer. Among other titles , he has won the ATP World Tour Finals five times and was on the Serbian team which won the 2010 Davis Cup .. ATP World Tour. ATP World Tour. Davis Cup. Davis Cup. 2010 Davis Cup. ATP World Tour Finals. ATP World Tour Finals. 2010 Davis Cup. 2010 Davis Cup. He also won the Bronze medal in men 's singles at the 2008 Summer Olympics .. 2008 Hopman Cup. 2008 Summer Olympics. 2008 Summer Olympics. Djokovic is the first Serbian player to be ranked No. 1 by the ATP and the first male player representing Serbia to win a Grand Slam singles title .. Grand Slam. Grand Slam ( tennis ). No. 1. List of ATP number 1 ranked singles tennis players. Djokovic has won numerous awards , including the 2012 , 2015 , and 2016 Laureus World Sports Award for Sportsman of the Year , 2011 BBC Overseas Sports Personality of the Year , five-time ITF World Champion , and four-time ATP year-end number 1 .. 2011 US Open – Men's Singles. 2012 ATP World Tour Finals – Singles. 2015 ATP World Tour Finals – Singles. 2016 French Open – Men's Singles. Laureus World Sports Award for Sportsman of the Year. Laureus World Sports Award for Sportsman of the Year. BBC Overseas Sports Personality of the Year. BBC Overseas Sports Personality of the Year. ITF World Champion. ITF World Champions#Men's Singles. ATP year-end number 1. List of ATP number 1 ranked singles players#Year-end No. 1. He is a recipient of the Order of St. Sava , the Order of Karađorđe 's Star and the Order of the Republika Srpska .. Order of St. Sava. Order of St. Sava. Order of the Republika Srpska. Order of the Republika Srpska
related.