"1935-04-30Z"^^ . "Ostanek, Walter"@en . . "1935-04-20Z"^^ . . "solo_singer" . . "1936Z"^^ . . . "Ladislav John \"Walter\" Ostanek, CM (born 20 April 1935), is known as Canada's Polka King. He has received thirteen nominations for Grammy Awards and won three."@en . "1935Z"^^ . . . . "Ladislav John Ostanek"@en . . . "Canadian musician" . "Walter Ostanek"@en .