Question: What is the nickname of the leader of Christy Kinahan's rival gang?

full_context: Document 1: Shooting of Gareth Hutch: Gareth Hutch was shot dead on Tuesday 24 May 2016. He was a nephew of Gerry Hutch. He was also a cousin of Gary Hutch and a nephew of Eddie Hutch Snr.
Document 2: Patrick Holland (criminal): Patrick Eugene "Dutchy" Holland (died 6 June 2009), was an Irish career criminal, best known for being the first person accused of killing Irish investigative journalist Veronica Guerin, which he denied until his death in prison in England.
Document 3: Gerry Hutch: Gerry Hutch (born 1963) is an Irish criminal. He was the prime suspect for two of the biggest armed robberies in Irish history. Known for leading a "disciplined, ascetic lifestyle" since leaving prison in 1985, he was christened "The Monk" by Veronica Guerin, an investigative journalist who applied nicknames to Ireland's crime bosses before being assassinated in 1996.
Document 4: John Traynor (criminal): John "The Coach" Traynor (born 1948) is an Irish criminal. Traynor was one of the contacts in the criminal world for murdered Irish journalist Veronica Guerin.
Document 5: Veronica Guerin: Veronica Guerin (5 July 1958 – 26 June 1996) was an Irish crime reporter who was murdered by drug lords. Born in Dublin, she was an athlete in school, and later played on the Irish national teams for both football and basketball. After studying accountancy she ran a public-relations firm for seven years, before working for Fianna Fáil and as an election agent for Seán Haughey. She became a reporter in 1990, writing for the "Sunday Business Post" and "Sunday Tribune". In 1994 she began writing about crime for the "Sunday Independent". In 1996 she was fatally shot while stopped at a traffic light. The shooting caused national outrage in Ireland. Investigation into her death led to a number of arrests and convictions.
Document 6: Charles Bowden (criminal): Charles Bowden is a convicted Irish criminal, who after turning state's witness in the murder of journalist Veronica Guerin, was the first person to enter Irelands's Witness Security Programme.
Document 7: 2015–17 Irish gangland feud: A major feud between two criminal gangs in the Republic of Ireland has killed ten people. The Hutch gang, led by Gerry Hutch, and the Kinahan gang, led by Christy Kinahan, are the main participants.
Document 8: Shooting of Eddie Hutch Snr: The shooting of Eddie Hutch Snr occurred on 8 February 2016. Eddie was the brother of Gerry Hutch, the leader of the Hutch gang, which was in a feud with the Kinahan gang, led by Christy Kinahan. The feud of the two criminal gangs, called the 2015–16 Irish gangland feud, in the Republic of Ireland resulted in the deaths of ten people.
Document 9: Irish Mob: The Irish Mob is the oldest organized crime group in the United States, in existence since the early 19th century. Originating in Irish American street gangs of the 19th century—depicted in Herbert Asbury's 1928 book "The Gangs of New York"—the Irish Mob has appeared in most major U.S. cities, including Boston, New York City, Philadelphia, and Chicago.
Document 10: Donnelly's Bar and Kay's Tavern attacks: On 19 December 1975, two coordinated attacks were carried out by the Ulster Volunteer Force (UVF) in pubs either side of the Irish border. The first attack, a car bombing took place outside Kay's Tavern, a pub in Dundalk in the Republic of Ireland close to the border. The second attack, a gun and bomb attack, took place at Donnelly's Bar & Filling Station in Silverbridge, County Armagh just across the border inside Northern Ireland. The attack has been linked to the Glenanne gang, a group of Loyalist militants who were either members of the UVF, the Ulster Defence Regiment (UDR), the Royal Ulster Constabulary (RUC) and the closely linked UVF paramilitary the Red Hand Commando (RHC), some of the Glenanne gang were members of the two of these organizations at the same time like gang leaders Billy Hanna who was in both the UVF and the UDR and who fought for the British Army during the Korean War and John Weir (loyalist) who was in the UVF and was a Sergeant in the RUC. At least 25 British soldiers and police officers were named as members of the gang.
Document 11: Shankill Butchers: The Shankill Butchers was an Ulster loyalist gang—many of whom were members of the Ulster Volunteer Force (UVF)—that was active between 1975 and 1982 in Belfast, Northern Ireland. It was based in the Shankill area and was responsible for the deaths of at least 23 people, most of whom were killed in sectarian attacks. The gang was notorious for kidnapping and murdering random Catholic and suspected Catholic civilians; each was beaten ferociously and had his throat hacked with a butcher's knife. Some were also tortured and attacked with a hatchet. The gang also killed six Ulster Protestants over personal disputes, and two other Protestants mistaken for Catholics. Most of the gang were eventually caught and, in February 1979, received the longest combined prison sentences in United Kingdom legal history. However, gang leader Lenny Murphy and his two chief "lieutenants" escaped prosecution. Murphy was killed in November 1982 by the Provisional IRA, likely acting with loyalist paramilitaries who perceived him as a threat. The Butchers brought a new level of paramilitary violence to a country already hardened by death and destruction. The judge who oversaw the 1979 trial described their crimes as "a lasting monument to blind sectarian bigotry".
Document 12: Veronica Guerin (film): Veronica Guerin is a 2003 American-Irish-British biographical crime film directed by Joel Schumacher and starring Cate Blanchett in the title role. The screenplay by Carol Doyle and Mary Agnes Donoghue focuses on Irish journalist Veronica Guerin, whose investigation into the drug trade in Dublin led to her murder in 1996, at the age of 37. The film is the second to be inspired by Guerin's life. Three years earlier, "When the Sky Falls" centred on the same story, although the names of the real-life characters were changed.
Document 13: Westies: The Westies were a New York City-based Irish American organized crime gang, responsible for racketeering, loan sharking, bookmaking, number writing, contract killing, drug trafficking, murder, illegal gambling, and extortion. They were partnered with the Italian-American Mafia, and operated out of the Hell's Kitchen neighborhood of Manhattan. According to crime author T. J. English, "Although never more than twelve to twenty members—depending on who was in or out of jail at any given time—the Westies became synonymous with the last generation of Irish in the birthplace of the Irish Mob..." According to the NYPD Organized Crime Squad and the FBI, the Westies were responsible for 60–100 murders between 1968 and 1986.
Document 14: Darkie Hutton: Envoy Richard 'Darkie’ Hutton (1849 – 1921) was a reformed criminal and former member of the Charles Peace gang who spent 23 years in prison before he was converted and became an evangelist and Officer in The Salvation Army.
Document 15: Derek Hutch: Derek "Del Boy" Hutch is an Irish criminal and brother of Gary Hutch.
ground_truth: The Monk