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In Australia, the national representative team of many sports has a nickname, used informally when referring to the team in the media or in conversation. These nicknames are typically derived from well-known symbols of Australia. Often the nickname is combined with that of a commercial sponsor, such as the "Qantas Wallabies" or the "Telstra Dolphins". Some names are a portmanteau word with second element -roo, from kangaroo; such as "Olyroos" for the Olympic association football team.