"2009-01-30Z"^^ . . . "Willem de Looper"@en . . . "1932Z"^^ . . . "2009Z"^^ . "American artist" . "Willem Johan de Looper (October 30, 1932 in The Hague \u2013 January 30, 2009) was an American abstract artist, and chief curator at The Phillips Collection."@en . "1932-10-30Z"^^ . . "Looper, Willem De"@en .