"Obrien, Denis"@en . "6.8E9"^^ . . . "Denis O'Brien"@en . "Denis O'Brien (born 19 April 1958) was listed among the World's Top 200 Billionaires in 2015 (although his position and net worth fluctuates real-time) and is also Ireland's richest native-born citizen.O'Brien owns Communicorp, a media holding company which operates across Europe, but particularly in Ireland where it dominates national radio (apart from RT\u00C9) via stations like Newstalk and Today FM."@en . . . "1958-04-19Z"^^ . . . . "1958Z"^^ . . "Irish billionaire" .