Question: What prison was an Australian prison established in 1851 in Coburg, Victoria, that executed the School-girl Strangler?

Context paragraphs:
Fulham Correctional Centre: Fulham Correctional Centre is a medium security Australian prison located in Hopkins Road, Sale, Victoria, Australia.  The prison consists of mainstream medium and minimum (fenced and unfenced) security cell blocks, management (solitary), and a protection unit.

Western Australian Prison Officers' Union: The Western Australian Prison Officers' Union (WAPOU) is a trade union that represents prison officers in Western Australia.  It is affiliated with the Australian Council of Trade Unions and the ALP (Australian Labor Party).  It currently has over 1800 members throughout the public prison service.

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.

Wetumpka State Penitentiary: The Wetumpka State Penitentiary (WSP), originally known as the Alabama State Penitentiary, was the first state prison established in Alabama.  Built on the east bank of the Coosa River in Wetumpka, it was nicknamed the "Walls of Alabama" or "Walls."  For much of its operation, the prison housed both men and women, kept in separate sections of the prison.

HM Prison Langi Kal Kal: HM Prison Langi Kal Kal is an Australian prison located in Trawalla, near Beaufort, Victoria, Australia.  The prison is a minimum security prison farm and all inmates are required to work during their stay unless over retirement age.  It is a minimum security pathway for protection prisoners from Ararat Prison.

Arnold Sodeman: Arnold Karl Sodeman ((1899--)12 1899 – (1936--)1 1936 ), also known as the School-girl Strangler, was a serial killer who targeted children.  He confessed to four killings before being executed at Pentridge Prison, Victoria in 1936.  Sodeman was the second of eleven people to be hanged at Pentridge Prison after the closure of Melbourne Gaol in 1929.

Staff and prisoners of Fremantle Prison: Staff and prisoners of Fremantle Prison occupied the former prison on The Terrace, Fremantle, in Western Australia, between 1855 and 1991.  Fremantle Prison was administered by a comptroller general, sheriff, or director, responsible for the entire convict or prison system, and a superintendent in charge of the prison itself.  Prison officers, known as warders in the 19th century, guarded against escapes, enforced discipline, oversaw prisoner work, and instructed inmates in trades.  Officers worked under stringent conditions until they achieved representation through the Western Australian Prison Officers Union.  Convicts were initially of good character, as potential future colonists, but eventually less desirable convicts were sent, until the end of transportation in 1868.  As a locally run prison, Fremantle's population was generally short-sentenced white prisoners in the 1890s, with very few Aboriginal prisoners; however, by the late 20th century, most prisoners were serving longer sentences, a higher proportion of them were violent, and Aboriginal people were over-represented.

History of Fremantle Prison: The history of Fremantle Prison, a former Australian prison in Fremantle, Western Australia, extends from its construction as a prison for convicts, using convict labour, in the 1850s, through to its modern-day usage as a tourist attraction.  The design for Fremantle Prison was based on the Pentonville Prison in Britain, and it would be the longest, tallest prison cell block in the southern hemisphere.  Construction began in 1851, and was completed by the end of 1859.  The prison was transferred to the colonial government in 1886 for use for locally sentenced prisoners.  Following a Royal Commission held in 1898−99, some changes were made to Fremantle Prison, including knocking down the inner wall between two cells, introducing a prisoner classification system, and constructing internal walls in the main block to create four separate divisions.  A new cell block, New Division, was completed in 1907 and occupied in 1908.

Greenough Regional Prison: Greenough Regional Prison is an Australian prison located in Geraldton, Western Australia, Australia.  The prison was opened in 1984 and had an operational capacity of 328 as of November 2012.  The prison houses prisoners from around the Mid West region including a large proportion of Aboriginal prisoners.

Sukhanovo Prison: Sukhanovka, short for Sukhanovskaya osoborezhimnaya tyur'ma (Russian: Сухановская особорежимная тюрьма ) 'Sukhanovo special-regime prison,' was a prison established by the NKVD under N. I. Yezhov in 1938 for "particularly dangerous enemies of the people" on the grounds of the old Ekaterinskaia Pustyn' Monastery near Vidnoye, just south of Moscow.  Known officially as Special Object 110 (Russian: Спецобъект № 110 ), it was said to be worse than the Lubyanka, Lefortovo, or Butyrka prisons in Moscow itself.  Since 1958 it was a jail hospital.  During 1992 the prison was returned to the church as a monastery and on November 17, 1992, the first vows were made within its walls.

Supporting paragraphs: Arnold Sodeman HM Prison Pentridge
Answer: Her Majesty's Prison Pentridge