"Edward Grahame Johnstone"@en . "Johnstone, Edward Grahame"@en . "1917Z"^^ . . . "1919Z"^^ . "Lieutenant Edward Grahame Johnstone (6 May 1899 \u2013 1946) was a British World War I flying ace credited with 17 aerial victories."@en . . "United Kingdom" . . "1899Z"^^ . . . "British WWI flying ace" . "1899-05-06Z"^^ . "1946Z"^^ .