Question: How far north of Sydney is this park that is located at Sombersby in Australia and was established by Eric Worrell?

Context paragraphs:
Dalstroy: Dalstroy (Russian: Дальстро́й , ] ), also known as Far North Construction Trust, was an organization set up in 1931 by the Soviet NKVD (the predecessor of the KGB) in order to manage road construction and the mining of gold in the Chukotka region of the Russian Far East, now known as Kolyma.  Initially it was established as "State Trust for Road and Industrial Construction in the Upper Kolyma Area".  After the 1952 reorganization it was known as "Main Directorate of Camps and Construction of the Far North".

Football Far North Coast: Football Far North Coast (FFNC) is the governing body controlling Association Football on the Far North Coast of New South Wales, Australia.  The name of the organization was changed in late 2005 from Soccer Far North Coast in line with the national governing body which changed from Soccer Australia to Football Federation Australia.

Mid North: The Mid North is a region of South Australia, north of the Adelaide Plains, but not as far north as the Far North, or the outback.  It is generally accepted to extend from Spencer Gulf east to the Barrier Highway, including the coastal plain, the southern part of the Flinders Ranges, and the northern part of the Mount Lofty Ranges.  The area was settled as early as 1840 (South Australia settlement began in 1836) and provided early farming and mining outputs for the fledgling colony.  Farming is still significant in the area, particularly wheat, sheep and grapevines.  There are not currently any significant mining activities in the Mid North.

Australian Reptile Park: The Australian Reptile Park is located at Somersby on the Central Coast, New South Wales in Australia.  It is about 50 km (a one-hour drive) North of Sydney, and is just off the Sydney-Newcastle Freeway.  The park is home to a variety of reptiles, including snakes, lizards and crocodiles, as well as other Australian animals, such as koalas, kangaroos, cassowaries and Tasmanian devils.

Far North (South Australia): The Far North is a large region of South Australia close to the Northern Territory border.  Colloquial usage of the term in South Australia refers to that part of South Australia north of a line roughly from Ceduna through Port Augusta to Broken Hill.  The South Australian Government defines the Far North region similarly with the exception of the Maralinga Tjarutja Lands.  the Yalata Aboriginal Reserve and other unincorporated crown lands in the state's far west, which are officially considered part of the Eyre and Western region.

WGR: WGR, or WGR Sports Radio 550, is an all sports radio station in Buffalo, New York that broadcasts on 550 AM.  It is the flagship station of the Buffalo Bills and Buffalo Sabres, carrying a mostly locally originated sports talk and play-by-play lineup.  Its studios are located in Amherst, New York, and transmitter in suburban Hamburg, New York.  Although it has a power of 5,000 watts, during the day its signal can be heard as far north as Barrie, Peterborough and Kingston, Ontario, as far west as Windsor, Ontario, as far east as Syracuse, and as far south as Sandusky, OH and Youngstown, Ohio.  At night its signal can be heard as far north as Sudbury, Barrie and Peterborough, Ontario, as far west as Guelph, Kitchener and Waterloo, Ontario, as far east as Batavia, and as far south as Jamestown and Olean.  In nearby Erie, Pennsylvania the station has a city-grade signal, primarily in Erie's eastern suburbs.  Under ownership of Entercom, its studios are located on Corporate Parkway in Amherst, New York.

Alangium villosum subsp. polyosmoides: Alangium villosum" subsp.  "polyosmoides is a rainforest tree of eastern Australia.  It occurs on a variety of different soils and rainforests, relatively close to the coast.  Found from Minmi near Newcastle to as far north as the McIlwraith Range in far north eastern Australia.  It may be seen as a common understorey plant at Wingham Brush Nature Reserve.

Far North zone (wine): Far North zone is a wine zone located in the state of South Australia which covers the entire extent of the state north of a line of latitude approximately in line with Crystal Brook, i.e. 33 degrees 21 minutes south.  The zone is bounded by the following wine zones to its south: The Peninsulas, the Mount Lofty Ranges and the Lower Murray (from west to east).  The term ‘Far North’ was registered as an Australian Geographical Indication under the "Wine Australia Corporation Act 1980" on 27 December 1996.  As of 2003, the zone only contains one region - the Southern Flinders Ranges.

Snake Bitten: Snake Bitten is a book written by Kevin Markwell and Nancy Cushing.  The book, with interviews form staff and supporters, is a biography of Eric Worrell who established the Australian Reptile Park in 1959.

North Mayfair, Chicago: North Mayfair is a historic neighborhood in Far North Side, Chicago, Illinois.  It is located within Albany Park on the city's Far North Side.

Supporting paragraphs: Snake Bitten Australian Reptile Park
Answer: 50 km