Question: William Vasey Houghton was known for cleaning up a prison in what city? 

Context paragraphs:
HM Prison Inverness: HM Prison Inverness, also known as Porterfield Prison, is located in the Crown area of Inverness, Scotland, and serves the courts of the Highlands and Islands.  It covers all the courts in the Western Isles as well as courts from Fort William, Wick and Elgin.  A small local prison, it deals with inmates serving up to 4 years, with female prisoners serving up to 2 years.  Its capacity is 103 prisoners and as of 2016, on account of this capacity being insufficient, Scottish Prison Service intended to build a new prison near Milton of Leys.

Bud Houghton: Harry Brian "Bud" Houghton (1 September 1936 – 1994), also known as Harry Houghton, was a professional footballer who scored 79 goals in 207 appearances in the Football League playing for Bradford Park Avenue, Birmingham City, Southend United, Oxford United and Lincoln City.  He played as a centre forward.

HM Prison Edinburgh: Her Majesty's Prison Edinburgh is located in the west of Edinburgh on the main A71, in an area now known as Stenhouse, and, although never named as such, has been popularly known as Saughton Prison from the old name for the general area.  The prison is situated on the edge of a predominantly residential area and has good transport and road links to the city centre, which provides good access both for local courts and visitors to the prison.  The building of the prison started on 31 July 1914 with the first prisoner being received in 1919.  The prison currently consists of five halls; Glenesk, Hermiston, Ingliston, Ratho and The Digger.

William Henry Houghton: William Henry "Will" Houghton (June 28, 1887 – June 14, 1947) was an evangelist and the fourth president of Moody Bible Institute, in Chicago.  Biographer Wilbur Smith said of him: "Two primary passions possessed the soul of Will H. Houghton: From the beginning of his ministry to the end… evangelism, and the study of the word of God."  Houghton was known for his fundamentalist Christianity.

C. G. Howes Dry Cleaning-Carley Real Estate: The C. G. Howes Dry Cleaning—Carley Real Estate building is a historic commercial building at 1171 Washington Street in the West Newton village of Newton, Massachusetts.  The single story buff brick building was constructed in 1928, to a design by Boston architect William Drummey, to house the dry cleaning and fur storage business of C. G. Howes.  In 1937 the building was purchased by Doris Carley, founder of the Carley Realty Company, the first female-owned realty business in the city.  Ms. Carley was also one of the founders of the regional multiple listing service, and was active in the real estate business for fifty years.

Big City Greens: Big City Greens (formerly known as "Country Club") is an upcoming Disney animated television series.  The series is created by Chris and Shane Houghton, who originally worked on Nickelodeon's "Harvey Beaks".  Emmy Award-winning director Rob Renzetti (creator of "My Life as a Teenage Robot" and supervising producer for "Gravity Falls") serves as executive producer and the Houghton brothers serve as co-executive producers.  It is scheduled to premiere on Disney XD in 2018.

Vasey Houghton: William Vasey Houghton MLC (3 January 1921 – 11 January 2001), better known as Vasey Houghton, was an Australian politician, grazier, and conservationist.  He was one of the longest-serving members of the Victorian State Parliament, spending eighteen years as a Member of the Legislative Council, nine of them on the front bench.  Houghton is remembered for his work cleaning up HM Prison Pentridge and the Yarra River.

William Houghton Sprague Pearce: William Houghton Sprague Pearce also known as W.H.S. Pearce (August 5, 1864 - April 15, 1935), an American artist, was born in Boston to Mary Anna Sprague Pearce and Shadrach Houghton Pearce.  His father ran a successful Chinese importing business.  He was descended from many of Massachusetts's founding and historical figures.  His grandfather was Charles Sprague, an early American poet known as the "Banker Poet of Boston".  His great grandfather, Samuel Sprague, was a Patriot of the Revolutionary period and a participant in the Boston Tea Party who served under George Washington.  He also is descended from Richard Warren, a Mayflower passenger and signer of the Mayflower Compact and The Rev. Peter Hobart of Hingham.

HM Prison Pentridge: Her Majesty's Prison Pentridge was an Australian prison that was first established in 1851 in Coburg, Victoria.  The first prisoners arrived in 1851.  The prison officially closed on 1 May 1997.

Stock Farm Prison: Stock Farm Prison, also known as Her Majesty's Prison, is the national prison of the Caribbean island of Dominica.  It lies in the northern part of the city of Roseau, in the Stock Farm neighborhood, just to the northwest of Dominica State College.  As of 2010 it had a prison population of 289, up from 229 in 1992, which, given its size, is severely overcrowded.As of 2010 it was directed by Denis A. Blanc, under the Dominica Prison Service.  A DFID small grants scheme has enabled the FCO to launch a training programme in the prison for the convicts such as bricklaying, carpentry and plumbing to enhance their job prospects after being released.

Supporting paragraphs: Vasey Houghton HM Prison Pentridge
Answer: Coburg, Victoria