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["Name","Net worth (USD Billion)","Age","Nationality","Source(s) of wealth"]
["Amancio Ortega",71.3,80," Spain","Inditex, Zara"]
["Bill Gates",86,61," United States","Microsoft"]
["Carlos Slim",54.5,77," Mexico","América Móvil, Grupo Carso"]
["Charles Koch",48.3,81," United States","Koch Industries"]
["David Koch",48.5,76," United States","Koch Industries"]
["Jeff Bezos",72.8,53," United States","Amazon.com"]
["Larry Ellison",52.2,72," United States","Oracle Corporation"]
["Mark Zuckerberg",56,32," United States","Facebook"]
["Michael Bloomberg",47.5,75," United States","Bloomberg L.P."]
["Warren Buffett",75.599999999999994,86," United States","Berkshire Hathaway"]