Question: What medal did Sharon Steward win at the 1990 Commonwealth Games?

full_context: Document 1: Singapore at the 2010 Commonwealth Games: Singapore competed in the 2010 Commonwealth Games held in Delhi, India, from 3 to 14 October 2010. Singapore competed in 8 out of 17 sports consisting of 68 athletes and 34 officials, making it the largest-ever contingent sent to the Commonwealth Games. Athletes are representing the country in Aquatics, Archery, Athletics, Badminton, Gymnastics, Shooting, Table tennis and Weightlifting. With 11 gold medals won, this is Singapore's best ever Commonwealth Games performance.
Document 2: 2010 Commonwealth Games: The 2010 Commonwealth Games (Hindi: 2010 राष्ट्रमण्डल खेल), officially known as the XIX Commonwealth Games, were held in Delhi, India, from 3 to 14 October 2010. A total of 6,081 athletes from 71 Commonwealth nations and dependencies competed in 21 sports and 272 events, making it the largest Commonwealth Games to date. It was also the largest international multi-sport event to be staged in Delhi and India, eclipsing the Asian Games in 1951 and 1982. The opening and closing ceremonies were held at the Jawaharlal Nehru Stadium, the main stadium of the event. It was the first time that the Commonwealth Games were held in India and the second time they were held in Asia after Kuala Lumpur, Malaysia in 1998. It was also the first time a Commonwealth Republic hosted the games, second in a country not presently headed by British monarch since Malaysia in 1998. The official mascot of the Games was "Shera" and the official song of the Games, "Jiyo Utho Bado Jeeto", was composed by celebrated Indian musician A.R. Rahman.
Document 3: Nauru at the 1990 Commonwealth Games: Nauru was represented at the 1990 Commonwealth Games in Auckland by a single athlete, weightlifter Marcus Stephen, who would later become his country's President in 2007. The 1990 Games marked Nauru's first participation in the Commonwealth Games. Stephen competed in three events only, and won medals in all three, including one gold.
Document 4: Sharon Stewart (athlete): Sharon Lee Stewart (born 17 August 1965) is a retired Australian middle-distance runner who specialised in the 800 metres. She represented her country at one outdoor and one indoor World Championships. In addition, she won the bronze medal at the 1990 Commonwealth Games.
Document 5: Australia at the 1990 Commonwealth Games: Australia at the 1990 Commonwealth Games was abbreviated AUS. This was their fourteenth of 14 Commonwealth Games having participated in all Games meets up to these Games.
Document 6: 1998 Commonwealth Games: The 1998 Commonwealth Games "(Malay: Sukan Komanwel 1998)", officially known as the XVI Commonwealth Games "(Malay: Sukan Komanwel ke-16)", was a multi-sport event held in Kuala Lumpur, Malaysia from 11 to 21 September 1998 with 214 events in 15 sports featured in the games. The 1998 games were the first held in an Asian country and the last Commonwealth Games of the 20th century. This was also the first time the games took place in a nation with a head of state other than the Head of the Commonwealth, and the first time the games were held in a non-English speaking nation. 3638 athletes from 69 Commonwealth member nations participated at the games with 34 of them collected medals. For the first time ever, the games included team sports. The other bid from the 1998 games came from Adelaide in Australia.
Document 7: Karen van Wirdum: Karen Tracey van Wirdum (born 9 April 1971) is a former freestyle swimmer from Australia, who competed in three consecutive Summer Olympics for her native country, starting in 1988. She won the gold medal in the 100-metre freestyle at the 1990 Commonwealth Games and in the 50-metre freestyle at the 1994 Commonwealth Games.
Document 8: Jane Colebrook: Katrina Jane Weston (née Colebrook, formerly Finch; born 8 November 1957) is a former British middle distance runner who specialised in the 800 metres. Competing as Jane Colebrook, she equalled the world indoor best to win at the 1977 European Indoor Championships and won a bronze medal at the 1978 Commonwealth Games. Competing as Jane Finch, she won a silver medal at the 1985 World Indoor Games.
Document 9: Steve Cram: Stephen "Steve" Cram CBE (born 14 October 1960) is a British retired track and field athlete. Along with fellow Britons Sebastian Coe and Steve Ovett, he was one of the world's dominant middle distance runners during the 1980s. Nicknamed "The Jarrow Arrow", after his hometown, Cram set world records in the 1500 m, 2000 m and the mile during a 19-day period in the summer of 1985. He was the first man to run 1500 m under 3 minutes and 30 seconds. He won the 1500 m gold medal at the 1983 World Championships and the 1500 m silver medal at the 1984 Olympic Games.
Document 10: Botswana at the Commonwealth Games: Botswana has competed at ten Commonwealth Games, with the first coming in 1974. They did not participate in the 1978 Commonwealth Games, but have attended all nine since. Botswana have won twelve medals, with six of these coming in boxing. Their most successful Games were 2010 when they won four medals, including Botswana's first ever gold, won by Amantle Montsho.
Document 11: Sebastian Coe: Sebastian Newbold Coe, Baron Coe, {'1': ", '2': ", '3': ", '4': "} (born 29 September 1956), often referred to as Seb Coe or Lord Coe, is a British politician and former track and field athlete. As a middle-distance runner, Coe won four Olympic medals, including the 1500 metres gold medal at the Olympic Games in 1980 and 1984. He set eight outdoor and three indoor world records in middle-distance track events – including, in 1979, setting three world records in the space of 41 days – and the world record he set in the 800 metres in 1981 remained unbroken until 1997. Coe's rivalries with fellow Britons Steve Ovett and Steve Cram dominated middle-distance racing for much of the 1980s.
Document 12: 1990 Commonwealth Games: The 1990 Commonwealth Games were held in Auckland, New Zealand from 24 January – 3 February 1990. It was the 14th Commonwealth Games, and part of New Zealand's 1990 sesquicentennial celebrations. Participants competed in ten sports: athletics, aquatics, badminton, boxing, cycling, gymnastics, judo, lawn bowls, shooting and weightlifting. The Triathlon was a demonstration event.
Document 13: Linda Keough: Linda Staines (née Keough, born 28 December 1963) is a former British athlete who competed mainly in the 400 metres. She represented Great Britain at the 1988 Olympic Games in Seoul in both the 400 metres and 4 x 400 metres relay, and won a bronze medal in the 4 × 400 m relay at the 1993 World Championships. She also won four medals at the Commonwealth Games, including a silver medal in the 400 metres in 1990.
Document 14: 800 metres: The 800 metres, or 800 meters (US spelling), is a common track running event. It is the shortest common middle-distance running event. The 800 metres is run over two laps of the track (400 metre track) and has been an Olympic event since the first games in 1896. During indoor track season the event is usually run on a 200-metre track, therefore requiring four laps.
Document 15: Peter Elliott (athlete): Peter Elliott (born 9 October 1962 in Rotherham, Yorkshire) is a former middle-distance runner from the United Kingdom. During his career, he won the gold medal in the 1500 metres at the 1990 Commonwealth Games, the silver medal in the 1500 metres at the 1988 Olympic Games, and the silver medal in the 800 metres at the 1987 World Championships.
ground_truth: bronze medal