"Brown, Robert"@en . . "Americanblues singer and musician" . "1966-11-06Z"^^ . . "Robert Brown"@en . "solo_singer" . "1920Z"^^ . . . . "1960Z"^^ . . . "Washboard Sam"@en . . . . . "Washboard Sam"@en . . "1966Z"^^ . "1910-07-15Z"^^ . "Robert Brown (July 15, 1910 \u2013 November 6, 1966), known professionally as Washboard Sam, was an American blues singer and musician."@en . . "1910Z"^^ . . . .