Question: Wheal Watkins is a mine in a suburb of which city ?

Context paragraphs:
Glen Osmond, South Australia: Glen Osmond is a suburb of Adelaide, South Australia in the City of Burnside which is in the foothills of the Adelaide Hills.  It is well known for the road intersection on the western side of the suburb, where the South Eastern Freeway (National Route M1) from the Adelaide Hills and the main route from Melbourne splits into National Route A17 Portrush Road (north, the main route towards Port Adelaide), Glen Osmond Road, Adelaide (northwest towards Adelaide city centre) and state route A3 Cross Road west towards the coast and southern suburbs.

West Jordan, Utah: West Jordan is a city in Salt Lake County, Utah, United States.  West Jordan is a rapidly growing suburb of Salt Lake City and has a mixed economy.  According to the 2010 Census, the city had a population of 103,712, placing it as the fourth most populous in the state.  The city occupies the southwest end of the Salt Lake Valley at an elevation of 4,330 feet (1,320 m).  Named after the nearby Jordan River, the limits of the city begin on the river's western bank and end in the eastern foothills of the Oquirrh Mountains, where Kennecott Copper Mine, the world's largest man-made excavation is located.

Highlands, Gauteng: Highlands is a suburb of Johannesburg, South Africa.  It is located in Region 8.  Highlands occupies one of the highest points of Johannesburg and has commanding views over the mine dumps of the southern city.  Much of the surrounding area has lost its real estate value but property values are expected to recover if the inner city realises its long-awaited regeneration.  Westminster Mansions is the areas most prestigious apartment block, with 24 small but well-appointed flats occupied mostly by their owners.

Parktown mansions: The mansions of Parktown (a suburb of Johannesburg, South Africa) are an important part of the history of the city of Johannesburg.  They were the homes of the Randlords, accountants, military personnel and other influential residents of early Johannesburg, dating back as early as the 1890s.  The first of these mansions, "Hohenheim" was designed by Frank Emley and was built for Sir Lionel Philips and his wife Lady Florence Phillips.  The name Hohenheim had been used originally by Hermann Eckstein, one of the first Rand Lords to name his house after the place of his own birth.  When Philips became the head of Eckstein & Co, he moved in to Eckstein's house but due to the expansion of the city decided to build the new Hohenheim in an enviable site further from the mine workings.  Sir Lionel Philips was banished from the Republic for his involvement in the Jameson Raid.  It is perhaps fitting that the next occupant of this famous house was none other than Sir Percy Fitzpatrick, the author of the best selling book 'Jock of the Bushveldt'.  The house was demolished but a plaque remains in honor of this important building.

Wheal Watkins mine: Wheal Watkins mine is an historic lead and silver mine in Glen Osmond, South Australia.  The mine first operated from 1844 until 1850, and again briefly in 1888 to 1889, and 1916 .  From 1986 onwards, the mine was accessible by guided tour, until a rockfall event prompted its closure in 2005.

Supporting paragraphs: Wheal Watkins mine Glen Osmond, South Australia
Answer: Adelaide