"1976-02-29Z"^^ . . . . . "1888Z"^^ . "American aviation pioneer" . . . . "Grover Cleveland Loening"@en . . "Grover Cleveland Loening (September 12, 1888 \u2013 February 29, 1976) was an American aircraft manufacturer."@en . . . . "Loening, Grover"@en . . "1888-09-12Z"^^ . "1976Z"^^ .