Task: Question Answering
Input (English): Passage: "Don't Stop the Music" debuted at number 94 on the US Billboard Hot 100 chart in the issue dated December 8, 2007, and peaked at number three on February 16, 2008, becoming Rihanna's fourth top-three single. It topped the US Dance Club Songs chart (Rihanna's sixth number-one single), reached number two on the Pop Songs chart and number 74 on the Hot R&B/Hip Hop Songs chart. "Don't Stop the Music" had sold 3.7 million digital copies in the US as of June 2015, and has been certified four-times platinum from the Recording Industry Association of America (RIAA). The song reached number two on the Canadian Hot 100, remaining on the chart for a total of 52 weeks. It was Rihanna's second song to reach the chart's top three, following "Umbrella".In Australia, "Don't Stop the Music" debuted at number 22 on February 3, 2008. After three weeks, on February 24, the song peaked at number one and remained there for four weeks. It was Rihanna's third number-one single in the country, after "SOS" and "Umbrella", remaining on the chart for 27 weeks. "Don't Stop the Music" charted at number 12 on the 2008 year-end Australian Singles Chart. In 2015, the song was certified five times platinum by the Australian Recording Industry Association (ARIA) for sales of over 350,000 digital copies. The single debuted at number 31 in New Zealand on October 12, 2007. After fluctuating for four weeks, it peaked at number three for a week and spent a total of 22 weeks on the chart. "Don't Stop the Music" was certified gold by the Recording Industry Association of New Zealand (RIANZ) in April 2008 for sales of over 7,500 digital copies.In the United Kingdom, the song debuted at number 68 on December 15, 2007. After seven weeks on the chart, it peaked at number four. In July 2013, the song was certified gold by the British Phonographic Industry (BPI) for sales of over 400,000 digital copies. The single was 24 on the 2008 year-end UK Singles Chart. "Don't Stop the Music" debuted atop the French Singles Chart on October 27, 2007, Rihanna's first number-one single on the chart. Remaining at number one for two weeks, the song spent a total of 34 weeks on the chart. On the German Singles Chart, it debuted at number two on September 24, 2007. After two weeks, it reached number one, staying there for two consecutive weeks. "Don't Stop the Music" was certified gold by the Bundesverband Musikindustrie for shipments of 100,000 copies. It was successful on the Swiss Singles Chart, peaking at number one for five weeks. The song reached number one in Austria, Flanders and Wallonia in Belgium, Hungary and the Netherlands. 
Question: What were the names of Rihanna's top three songs on in Australia?
Output (English): SOS.