Question: In which state of Australia can you find the Yarra Valley, the region surrounding a river by the same name, and where the Mooroolbark College, a government secondary school is situated near the Dandenong Ranges?
Context: Mooroolbark College is a government secondary school situated in Victoria, Australia, near the Dandenong Ranges and the Yarra Valley.  It has a student population of around 1,160 (fluctuates between 1,100 and 1,200, 1,200 being the max). Dandenong is a suburb of Melbourne, Victoria, Australia, approximately 30 km south-east from Melbourne's central business district.  Situated on the Dandenong Creek, it is at the foothill of the Dandenong Ranges and is the main administrative centre for the City of Greater Dandenong local government area.  At the 2011 Census, central Dandenong had a population of 24,919. The Shire of Yarra Ranges is a local government area in Victoria, Australia, located in the outer eastern and northeastern suburbs of Melbourne extending into the Yarra Valley and Dandenong Ranges.  It has an area of 2469.9 km2 , and at the 2011 census, it had a population of 144,541. Melbourne, the capital city of Victoria, Australia, is situated on the southeastern fringe of the Australian landmass and in the southern central part of the state.  Melbourne covers an area of approximately 8,694 km².  The city itself stands in a region of alpine forests known as the High Country.  The city and metropolitan areas of Melbourne also spans along the lower stretches of the Yarra River.  Towards eastern Melbourne is the low-lying mountain ranges known as Dandenong Ranges, 35 km east of the city. Mooroolbark is a suburb of Melbourne, Victoria, Australia, 31 km east of Melbourne's central business district.  Its local government area is the Shire of Yarra Ranges.  At the 2011 census , Mooroolbark had a population of 20,689.  Mooroolbark is at an altitude of approximately 93m. The AFL Yarra Ranges is an Australian rules football and netball organization based in the Yarra Valley and Dandenong Ranges within Victoria.  The organization operates the Yarra Ranges Senior Football league and the Yarra Ranges Junior Football league. The Yarra Valley is the name given to the region surrounding the Yarra River in Victoria, Australia.  The river originates approximately 90 kilometres east of the Melbourne central business district and flows towards it and out into Port Phillip Bay.  The name Yarra Valley is used in reference to the upper regions surrounding the Yarra River and generally does not encompass the lower regions including the city and suburban areas, where the topography flattens out, or the upper reaches which are in inaccessible bushland.  Included in the Yarra Valley is the sub-region of Upper Yarra (or the Upper Yarra Valley) which encompasses the towns of the former Shire of Upper Yarra in the catchment area upstream of and including Woori Yallock.  The Yarra Valley is a popular day-trip and tourist area, featuring a range of natural features and agricultural produce, as well as the Lilydale to Warburton Rail Trail. The Heidelberg Artists Trail is a self-drive, cycling and walking trail that includes a series of 57 explanatory signs and boards situated in locations frequented by artists of the Heidelberg School.  The signs display reproductions and descriptions of some of the most famous paintings, and are popular with school groups who have an interest in the arts and the natural environment.  The trail winds for approximately 40 km through much of Jagajaga, including the municipalities of Banyule, Nillumbik and Manningham, through to the Yarra Valley and the Dandenong Ranges. Magburaka Government Secondary School for Boys is a government-sponsored secondary school based in Magburaka, in the Tonkolili District, Sierra Leone.  The school is one of the oldest secondary schools in Sierra Leone.  The Magburaka Government Secondary School for Boys has a history of producing some of Sierra Leone's most prominent people, including current Sierra Leone's president Ernest Bai Koroma, minister of Education Minkailu Bah and writer, novelist and author Karamoh Kabba. Lilydale Heights College is a government secondary school located in the suburb of Lilydale, east of Melbourne, Victoria, Australia.  It covers both junior secondary and higher secondary (VCE) curricula, and draws students from primary schools from the urban areas of Lilydale and the rural Yarra Valley.
Answer: Victoria