Question: The Australian cricket team toured Sri Lanka from 6 August to 20 September 2011, four uncapped players had been named in the Australian Test squad, including Shaun Edward Marsh, an Australian cricketer who plays for the Western Warriors in Australian domestic cricket and has represented Australia at Test, One Day International and Twenty20 International levels, and nicknamed SOS, an acronym of what ?

full_context: Document 1: Aaron Heal: Aaron Keith Heal (born 13 March 1983) is an Australian cricketer who played domestically for Western Australia and later the Melbourne Renegades. A left-arm orthodox spinner and capable lower-order batsman, Heal debuted during the 2003–04 season, and played in the team that won that season's ING Cup. He established himself in Western Australia's first-class (Sheffield Shield) and limited-overs (Ford Ranger Cup) sides during the 2006–07 season, taking over from Brad Hogg as the team's primary spinner, but was selected less regularly over the following seasons. Heal's last first-class and one-day matches came during the 2010–11 season, but he was a regular when the team played in the KFC Twenty20 Big Bash, maintaining both a low economy rate and a low bowling average. His performances at Twenty20 led to his naming in Australia's initial 30 man squad for the 2009 ICC World Twenty20. Heal signed with the Melbourne Renegades for inaugural season of the Big Bash League, playing four matches.
Document 2: Shaun Marsh: Shaun Edward Marsh (born 9 July 1983) is an Australian cricketer who plays for the Western Warriors in Australian domestic cricket and has represented Australia at Test, One Day International and Twenty20 International levels. Nicknamed SOS ("Son of Swampy"), he is a left-handed opening batsman and very occasional spin bowler.
Document 3: Australian cricket team in Sri Lanka in 2016: The Australian cricket team toured Sri Lanka from 18 July to 9 September 2016 to play three Test matches, five One Day Internationals (ODIs), two Twenty20 Internationals (T20Is) matches and a first-class practice match. The Test series was played for Warne-Muralitharan Trophy, with Sri Lanka winning 3–0, their first ever series whitewash against Australia. As a result, Australia slipped from first to third in the ICC Test Championship; Sri Lanka, who had started the series ranked seventh, moved up to sixth.
Document 4: Warne–Muralidaran Trophy: The Warne–Muralitharan Trophy is awarded to the winner of the Australia–Sri Lanka Test cricket series from 2007–08 season onwards. The trophy is named after the two leading wicket takers in Test cricket, Sri Lanka's Muttiah Muralitharan (who prefers to romanise his name as "Muralidaran") and Australia's Shane Warne. The trophy celebrates the 25th anniversary of Australia–Sri Lanka Test cricket. The trophy features casts of the two bowlers' right hands and match-used cricket balls bowled by them during their careers. Sri Lanka Cricket, the governing body of cricket in Sri Lanka had written to its Australian counterpart, Cricket Australia, that the winner of the series should be awarded a trophy named after the two bowlers. Cricket Australia had responded positively to the Sri Lankans' proposal. In unveiling the trophy, Cricket Australia said in a statement,
Document 5: South African cricket team in Sri Lanka in 2013: The South African cricket team toured Sri Lanka from 20 July to 6 August 2013. The tour consisted of five One Day International and three Twenty20 International matches. Sri Lankan ODI captain Angelo Mathews was suspended for the first two ODI matches due to maintaining a slow over-rate during the final match of the West Indies tri-nation series. The other members of the Sri Lanka team were fined 40% of their match fees. Dinesh Chandimal served as captain in Mathews' stead making him, at 23, the youngest ODI captain in the history of Sri Lankan cricket.
Document 6: Australia national cricket team: The Australia national cricket team, represents the country of Australia in international cricket. It is the joint oldest team in Test cricket history, having played in the first ever Test match in 1877. The team also plays One Day International cricket and Twenty20 International, participating in both the first ODI, against England in the 1970–71 season and the first Twenty20 International, against New Zealand in the 2004–05 season, winning both games. The team draws its players from teams playing in the Australian domestic competitions – the Sheffield Shield, the Australian domestic limited-overs cricket tournament and the Big Bash League.
Document 7: Shane Warne: Shane Keith Warne (born 13 September 1969) is a former Australian international cricketer, and a former ODI captain. Widely regarded as one of the greatest bowlers in the history of the game, Warne was named one of the Wisden Cricketers of the Year in the 1994 Wisden Cricketers' Almanack. He was the Wisden Leading Cricketer in the World in 1997 (Notional Winner). He was named Wisden Leading Cricketer in the World for the year 2004 in the 2005 Wisden Cricketers' Almanack. In 2000, he was selected by a panel of cricket experts as one of the five "Wisden Cricketers of the Century", the only specialist bowler selected in the quintet and the only one still playing at the time. He is also a cricket commentator and a professional poker player. He officially retired from all formats of cricket in July 2013.
Document 8: Marvan Atapattu: Deshabandu Marvan Samson Atapattu (born 22 November 1970 in Kalutara) is a former Sri Lankan cricketer and former Sri Lankan captain, who played Tests and ODIs for seventeen years for Sri Lanka. One of the most stylish openers in world cricket, Atapattu started his career with 6 consecutive ducks in tests, but went on to become one of Sri Lanka's most prolific run scorers of all time, which included 6 double centuries in tests.
Document 9: Ashton Agar: Ashton Charles Agar (born 14 October 1993) is an Australian cricketer, plays all forms of the game international level. Agar plays domestically for Western Australia and the Perth Scorchers. A left-handed all-rounder, he played two Test matches for the Australian national side during the 2013 Ashes series.
Document 10: List of Sri Lanka national cricket captains: This is a list of all men, boys and women who have captained a Sri Lankan national cricket team at official international level. Sri Lanka became a full member of the International Cricket Council on 21 July 1981. Previously they were an associate member of the ICC from 1965, which made them eligible to compete in the ICC Trophy, the leading one-day tournament for associate members. Just after Sri Lanka gained Test status in 1981 a team of rebel players toured apartheid South Africa under the banner "Arosa Sri Lanka" (the term "Arosa" being derived from the promoter's name). All players who toured Sri Lanka were banned from official cricket matches for life, thereby setting Sri Lanka's development back. Sri Lanka's greatest success in One Day Internationals was when they won the Cricket World Cup in 1996 under the captaincy of Arjuna Ranatunga.
Document 11: Xavier Doherty: Xavier John Doherty (born 22 November 1982 in Scottsdale, Tasmania) is a former Australian international cricketer who played Australian domestic cricket with Tasmania and internationally for Australia. He is a left-handed batsman and a slow left arm orthodox bowler. After continued one-day success for Tasmania, Doherty made his One Day International debut for Australia against Sri Lanka at the Melbourne Cricket Ground in November 2010. Later that month, he made his Test debut against England at the Gabba, when he replaced off spinner Nathan Hauritz in team. He was not selected in Australia's 2011 World Cup squad due to a back injury.
Document 12: Shaun Tait: Shaun William Tait (born 22 February 1983 in Nairne, South Australia) is a former Australian cricketer, who recently retired from all three formats of the game. Tait had geninue pace and could bowl at 155kph regularly. Tait played in the Big Bash League for the Hobart Hurricanes and has represented Australia at Twenty20 International level; he has also represented his country in One Day Internationals and Test matches. He is a right arm fast bowler. Tait retired from One Day International cricket on 28 March 2011, following Australia's early exit from the 2011 Cricket World Cup. In March 2017, Tait announced his retirement from all forms of cricket.
Document 13: Australian cricket team in Sri Lanka in 2011: The Australian cricket team toured Sri Lanka from 6 August to 20 September 2011. The tour consisted of two Twenty20 Internationals (T20Is), five One Day Internationals (ODIs) and three Tests played for Warne-Muralidaran Trophy. Four uncapped players had been named in the Australian Test squad; Shaun Marsh, Trent Copeland, James Pattinson and Nathan Lyon. Lyon had only made four first-class appearances and was previously one of the groundstaff at the Adelaide Oval.
Document 14: Western Australia cricket team: The Western Australia cricket team, nicknamed the Western Warriors, represent the Australian state of Western Australia in Australian domestic cricket. The team is selected and supported by the Western Australian Cricket Association (WACA), and plays its home games at the WACA Ground in Perth. The team mainly plays matches against other Australian states in the first-class Sheffield Shield competition and the limited-overs Matador BBQs One-Day Cup, but occasionally plays matches against touring international sides. Western Australia previously also fielded sides at Twenty20 level, but was replaced by the Perth Scorchers for the inaugural 2011–12 season of the Big Bash League. Western Australia's current captain is Mitchell Marsh, and the current coach is Justin Langer.
Document 15: Tim Cruickshank: Timothy Dale Cruickshank (born 19 May 1982) is a New South Wales cricketer. He is a right hand batsman and rarely bowls. He is a regular in the Manly-Warringah Waratahs (a Sydney Grade Cricket club) and made his debut for New South Wales in the 2010/11 Ryobi One Day Cup - a provincial cricket tournament in Australia. In his debut against Queensland at the Brisbane Cricket Ground on 29 October 2010, Cruickshank made 8 off 16 balls. He has recently signed with the Sydney Thunder in the newly formed Big Bash League. Cruickshank has also played for New South Wales second XI and the New South Wales under 17 and 19s.
ground_truth: Son of Swampy