question: The Port Noarlunga Reef Aquatic Reserve and the Onkaparinga River are both located in which state of Australia?
answer: South Australia
context: Title: Electoral district of Mawson
  Passage: Mawson is an electoral district of the House of Assembly in the Australian state of South Australia.  It covers most of the outer southern suburbs of the City of Onkaparinga, including Hackham, Hackham West, Huntfield Heights, Noarlunga Downs, Old Noarlunga, Onkaparinga Hills and Seaford Heights, the regional shopping centre area at Noarlunga Centre, parts of Woodcroft, and the southern wine region around McLaren Vale and Willunga.
  Title: Onkaparinga River
  Passage: The Onkaparinga River, known as Ngangkiparri in the Kaurna language, is a river located in the Southern Adelaide region in the Australian state of South Australia.
  Title: Port Noarlunga, South Australia
  Passage: Port Noarlunga is a suburb in the City of Onkaparinga, South Australia.  It is a small sea-side suburb, population 2,632, about 30 km to the south of the Adelaide city centre and was originally created as a sea port.  This area is now popular as a holiday destination or for permanent residents wishing to commute to Adelaide or work locally.  There is a jetty that connects to a 1.6 km long natural reef that is exposed at low tide.  The beach is large and very long and has reasonable surfing in the South Port area whose name is taken from its location - 'South of the Port'.
  Title: Port Noarlunga Reef Aquatic Reserve
  Passage: Port Noarlunga Reef Aquatic Reserve is a marine protected area in the Australian state of South Australia located in waters in Gulf St Vincent adjoining the Adelaide metropolitan area and including part of the Onkaparinga River about 28 km south-west of the state capital of Adelaide.
citations: Onkaparinga River Port Noarlunga Reef Aquatic Reserve