With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Streptococcus is a genus of bacteria and it is in the field of biology.
text_B: Veselin `` Vesko '' Vukotic -LRB- born February 12 , 1958 in Niksic -RRB- is a Montenegrin criminal and hitman .. Niksic. Niksic. hitman. hitman. He was arrested in February 2006 and released from jail in August 2009 .. Currently he is living free in Novi Sad .. Novi Sad. Novi Sad. Vukotic is best known as one of the killers of a human rights activist , accused by Yugoslav state security service as CIA and KGB agent Enver Hadri .. Enver Hadri. Enver Hadri. Yugoslav. Yugoslavia. On February 25 , 1990 , Hadri was shot by Vukotic , Andrija Lakonic , and Darko Asanin -LRB- all employed and contracted by Yugoslav state security service UDBA at the time -RRB- in the Belgian capital Brussels .. Andrija Lakonic. Andrija Lakonic. Darko Asanin. Darko Asanin. UDBA. UDBA. Belgian. Belgium. Brussels. Brussels. Yugoslav. Yugoslavia. It is thought that the assassination was ordered by the Yugoslav secret service .. Yugoslav. Yugoslavia. Later that year Vukotic killed Lakonic at Nana nightclub in Belgrade 's neighbourhood of Senjak in the presence of Asanin and Serbian police inspector Miroslav Bizic .. Senjak. Senjak. The very next day after the murder , Vukotic escaped to the United States with help from inspector Bizic .. United States. United States. Both Asanin and Bizic were later murdered .. Despite arrest warrants , Vukotic continued traveling , spending most of his time in Montenegro .. Montenegro. Montenegro. On November 16 , 1997 , during a shooting at the Flash nightclub in Prcanj near Kotor , Montenegro , he murdered sailor Dusko Boskovic and wounded Vladimir Pavicevic .. Montenegro. Montenegro. Prcanj. Prcanj. Kotor. Kotor. Vukotic was arrested in late February 2006 by Spanish police at the Barajas Airport in Madrid after landing there on a flight from Paris .. Barajas Airport. Barajas Airport. Paris. Paris. At the time he traveled with a forged Croatian passport and driver 's license issued to the name Ludvig Bulic .. It is thought that the arrest was made as a result of a tip by Montenegrin police to their French counterparts who in turn extended the information to Spain .. The basis for Vukotic 's arrest was a 16-year-old arrest warrant issued by the Belgian police for Hadri 's murder as well as the arrest warrant for Boskovic 's murder .. Belgian. Belgium. There was talk that the International Criminal Tribunal for the former Yugoslavia -LRB- ICTY -RRB- showed interest in having Vukotic as a witness at the trial of Slobodan Milosevic since several witnesses mentioned Vukotic 's name in their testimonies , but nothing ever came of it .. International Criminal Tribunal for the former Yugoslavia. International Criminal Tribunal for the former Yugoslavia. Slobodan Milosevic. Slobodan Milosevic. Spanish authorities extradited Vukotic to Belgium where he spent more than two years in prison in Saint-Gilles .. Saint-Gilles. Saint-Gilles, Belgium. On December 18 , 2008 Belgian authorities extradited him to Serbia under heavy security. , because he has Serbian citizenship .. Belgian. Belgium. He was kept in district jail -LRB- Okruzni zatvor -RRB- in Novi Sad for less than a year .. Novi Sad. Novi Sad. In August 2009 , he suffered a myocardial heart attack and later was released on freedom for medical treatment .. myocardial. myocardial. Vukotic was arrested again on December 31 , 2010 by local Serbian police , but was released to freedom a few hours later , on the evening of the same day .
not_related.