Justin "The Destroyer" Juuko (born 26 December 1972 in Masaka) is a Ugandan amateur light flyweight and professional feather/super feather/light/light welter/welterweight boxer of the 1990s, 2000s and 2010s who as an amateur won the gold medal at light flyweight in the Boxing at the 1990 Commonwealth Games in Auckland, New Zealand, and as a professional won the World Boxing Council (WBC) International super featherweight title, World Boxing Council (WBC) FECARBOX super featherweight title, African Boxing Union (ABU) light welterweight title, North American Boxing Federation (NABF) super featherweight title, and Commonwealth super featherweight title, and was a challenger for the interim World Boxing Association (WBA) World super featherweight title against Antonio Hernandez, World Boxing Council (WBC) super featherweight title against Floyd Mayweather, Jr., International Boxing Association (IBA) super featherweight title against Diego Corrales, World Boxing Union (WBU) super featherweight title against Michael Gomez, International Boxing Association (IBA) lightweight title against Rustam Nugaev, Global Boxing Union (GBU) light welterweight title against Gábor Vető, his professional fighting weight varied from 125 lb , i.e. featherweight to 143 lb , i.e. welterweight.
John "Big Joe" Sichula (4 February 1955 — 1 October 1994 (aged 39)), was a Zambian amateur featherweight and professional super feather/light/light welterweight boxer of the 1970s and '80s who as an amateur qualified for (but withdrew from) the Boxing at the 1976 Summer Olympics in Montreal, Canada, won a bronze medal at featherweight at the 1978 All-Africa Games, won the silver medal at featherweight in the Boxing at the 1978 Commonwealth Games in Edmonton, Canada losing the final against Azumah Nelson of Ghana, and as a professional won the African Boxing Union (ABU) lightweight title, ABU super featherweight title, and Commonwealth Super featherweight title (3-occasions), and was a challenger for the All African Super Featherweight Title against Sam Akromah, his professional fighting weight varied from 127+3/4 lb , i.e. super featherweight to 135+1/2 lb , i.e. light welterweight.
George "Red Tiger" Ashie born in Accra is a Ghanaian professional super feather/light/light welterweight boxer of the 2000s and 2010s who won the African Boxing Union super featherweight title, Universal Boxing Council (UBC) Super Featherweight title, and Commonwealth lightweight title, and was a challenger for the World Boxing Association (WBA) International lightweight title against Emmanuel Tagoe, and Commonwealth super featherweight title against Kevin Mitchell, his professional fighting weight varied from 128+1/2 lb , i.e. super featherweight to 137+3/4 lb , i.e. light welterweight.
Jackson "Action" Asiku (born October 21, 1978), is a Ugandan/Australian amateur flyweight and professional feather/super featherweight boxer of the 1990s, 2000s and 2010s who as an amateur represented Uganda and won a bronze medal at flyweight in the Boxing at the 1998 Commonwealth Games in Kuala Lumpur, Malaysia, losing to eventual gold medal winner Richard Sunee of Mauritius, represented Uganda and won a bronze medal at flyweight in the Boxing at the 1999 All-Africa Games in Johannesburg, South Africa, losing to eventual silver medal winner Nacer Keddam of Algeria, and represented Uganda at flyweight in the Boxing at the 2000 Summer Olympics in Sydney, Australia, losing to Arlan Lerio of the Philippines, and as a professional won the Australian featherweight title, World Boxing Organization (WBO) Asia Pacific featherweight title, African Boxing Union (ABU) featherweight title, International Boxing Federation (IBF) Australasian featherweight title, International Boxing Organization (IBO) featherweight title, and Commonwealth featherweight title, and was a challenger for the International Boxing Federation (IBF) Pan Pacific featherweight title against Fahprakorb Rakkiatgym, his professional fighting weight varied from 123+1/2 lb , i.e. featherweight to 129+3/4 lb , i.e. super featherweight.
Mick O'Malley (born (1972--) 20 1972 (age 45 ) ) is an Australian professional feather/super feather/lightweight boxer of the 1990s and 2000s who won the Queensland (Australia) State super featherweight title, Australian featherweight title, Australian super featherweight title, and Commonwealth super featherweight title, and was a challenger for the Commonwealth super featherweight title against Alex Moon, his professional fighting weight varied from 125+3/4 lb , i.e. featherweight to 135 lb , i.e. lightweight.
Percy Commey (born 7 February 1960 in Accra) is a Ghanaian professional feather/super featherweight boxer of the 1970s, '80s, '90s and 2000s who won the Ghanaian featherweight title, African Boxing Union featherweight, and Commonwealth featherweight title, and was a challenger for the Ghanaian super featherweight title, and West African Boxing Union super featherweight title against Smith Odoom, his professional fighting weight varied from 123 lb , i.e. featherweight to 127 lb , i.e. super featherweight.
John Irwin (born 31 May 1969, Doncaster), known as Jon Jo Irwin, is an English amateur featherweight and professional feather/super featherweight boxer of the 1990s, who as an amateur represented England and won the gold medal at Featherweight in the Boxing at the 1990 Commonwealth Games in Auckland, New Zealand, and won the 1991 Amateur Boxing Association of England (ABAE) featherweight title, against Mark Bowers (Pinewood Starr ABC (Crowthorne), boxing out of Tom Hill ABC (Doncaster), and as a professional won the Irish featherweight title, World Boxing Board (WBB) super featherweight title, World Boxing Organization (WBO) Inter-Continental featherweight title, British Boxing Board of Control (BBBofC) British featherweight title, and Commonwealth featherweight title, and was a challenger for the BBBofC British featherweight title against Paul Ingle, and European Boxing Union (EBU) featherweight title against Steve Robinson, his professional fighting weight varied from 124+3/4 lb , i.e. featherweight to 129 lb , i.e. super featherweight.
Nedal "Skinny" Hussein (born 1 December 1977) is an Australian professional bantam/super bantam/feather/super feather/Lightweight boxer of the 1990s and 2000s who won the Australian super bantamweight title, Australian bantamweight title, International Boxing Federation (IBF) Pan Pacific featherweight title, World Boxing Federation (WBF) featherweight title, World Boxing Union (WBU) super bantamweight title, World Boxing Organization (WBO) Asia Pacific super featherweight title, International Boxing Federation (IBF) Pan Pacific super featherweight title, International Boxing Organization (IBO) Inter-Continental super featherweight title, and Commonwealth super bantamweight title, and was a challenger for the World Boxing Council (WBC) International super bantamweight title against Manny Pacquiao, World Boxing Council (WBC) super bantamweight title against Óscar Larios, World Boxing Organization (WBO) featherweight title against Scott Harrison, Oriental and Pacific Boxing Federation (OPBF) featherweight title against Hiroyuki Enoki, and Oriental and Pacific Boxing Federation (OPBF) super featherweight title against Takashi Uchiyama, his professional fighting weight varied from 117+1/4 lb , i.e. bantamweight to 132+3/4 lb , i.e. lightweight.
Mark Reefer (born 16 March 1964 in Hackney) is an English professional feather/super feather/lightweight boxer of the 1990s, who won the British Boxing Board of Control (BBBofC) Southern Area lightweight title, and Commonwealth super featherweight title, and was a challenger for the Commonwealth lightweight title against Mo Hussein, European Boxing Union (EBU) super featherweight title against Daniel Londas, and World Boxing Council (WBC) International super featherweight title against Pedro Armando Gutierrez, his professional fighting weight varied from 125 lb , i.e. featherweight to 135 lb , i.e. lightweight.
The World Boxing Organization (WBO) is a sanctioning organization which recognizes professional boxing world champions.
 It is recognized by the International Boxing Hall of Fame (IBHOF) as one of the four major world championship groups, alongside the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF).
 The WBO's headquarters are located in San Juan, Puerto Rico.

Question: Where are the headquarters of the organization through which Nedal Hussein has won the Asia Pacific super featherweight title?
Answer: San Juan, Puerto Rico