Question: Who is an Indigenous Australian koori people who are from the area which extended from around Singleton in the Hunter Valley through to the Warrumbungle Mountains in the west?

Context paragraphs:
Hunter Valley wine: The Hunter Valley is one of Australia's best known wine regions.  Located in the state of New South Wales, the region has played a pivotal role in the history of Australian wine as one of the first wine regions planted in the early 19th century.  Hunter Valley Semillon is widely considered the iconic wine of the region but the Hunter produces wine from a variety of grapes including Shiraz, Chardonnay, Cabernet Sauvignon and Verdelho.

Gamilaraay: The Kamilaroi or Gamilaroi are an Indigenous Australian koori people who are from the area which extended from around Singleton in the Hunter Valley through to the Warrumbungle Mountains in the west and up through the present-day centres of Quirindi, Gunnedah, Tamworth, Narrabri, Walgett, Moree, Lightning Ridge and Mungindi in New South Wales, to Nindigully in south west Queensland.  The Kamilaroi is one of the four largest indigenous nations in Australia.  The Kamilaroi language is classified in the Pama–Nyungan family of Australian languages.  The Kamilaroi Highway, Sydney Ferries Limited's vehicular ferry "Kamilaroi" (1901–1933), and a cultivar of Durum wheat have all been named after the Kamilaroi people.

Koori: The Koori People are Indigenous Australians of New South Wales and Victoria.

David Unaipon: David Unaipon (born David Ngunaitponi) (28 September 18727 February 1967) was an Indigenous Australian of the Ngarrindjeri people, a preacher, inventor and writer.  Unaipon's contribution to Australian society helped to break many Indigenous Australian stereotypes, and he is featured on the Australian $50 note in commemoration.

Gail Garvey: Gail Garvey is an indigenous Australian epidemiological oncologist and psycho-oncologist.  Garvey is a Kamilaroi woman whose family originated from Moree in western New South Wales.  She is currently Associate Professor at the Menzies School of Health.

Wonnarua: The Wonnarua people , otherwise written "Wanarruwa" are a group of indigenous people of Australia united by a common language, strong ties of kinship and survived as skilled hunter–fisher–gatherers in family groups or clans scattered along the inland area of what is now known as the Upper Hunter Valley, New South Wales, Australia.  Their creation spirit is "Baiami", also known as "Koin", the creator of all things and the "Keeper of the Valley".

Pokolbin, New South Wales: Pokolbin is a rural locality in the Hunter Region of New South Wales Australia.  It is part of the Singleton Council local government area and the city of Cessnock.  The area is the centre of the Lower Hunter Valley wine region.  Pokolbin lies within the Hunter Valley Important Bird Area.

Alas Poor Yagan: "Alas Poor Yagan" is an editorial cartoon, drawn by Dean Alston and published in "The West Australian" newspaper on 6 September 1997.  It consists of a panel of eight drawings of Indigenous Australian activist Ken Colbung speaking to a group of three Indigenous Australian children.  The cartoon's content offended many Indigenous Australians, and resulted in a complaint of racism to the Human Rights and Equal Opportunity Commission.  The commission eventually ruled that the cartoon made inappropriate references to Nyungar beliefs but did not breach the Racial Discrimination Act 1975.  This ruling was subsequently upheld on appeal to the Federal Court of Australia.

Murri people: The Murri are the Indigenous Australians of modern-day Queensland, North West New South Wales.  Collections of tribes and extended family groups throughout geographic regions of Australia have different names, such as the Yugarabul, the Jagera peoples from Coorparoo, Kwiambal peoples from Northern New South Wales and the Koori people of parts of New South Wales and Victoria.  The term is their preferred term, expressing pride in their heritage and race.

Australian Christian College – Singleton: Australian Christian College – Singleton is a co-educational school, located in Singleton in the Upper Hunter Valley, New South Wales, Australia.  The School has grades ranging from Pre-Kindergarten to Year 10.

Supporting paragraphs: Gail Garvey Gamilaraay
Answer: Gail Garvey