"American musician" . . "1987Z"^^ . "non_vocal_instrumentalist" . "Kiffmeyer, John"@en . "Al Sobrante"@en . . . . . . "1995Z"^^ . . . "John Kiffmeyer (born July 11, 1969), known professionally in music as Al Sobrante, is an American musician, best known as a former drummer for the punk rock band Green Day. His name of Al Sobrante is a reference to his hometown, El Sobrante. His work with Green Day resulted in about 961,000 albums sold, which are mostly from the compilation album 1,039/Smoothed Out Slappy Hours."@en . "1969Z"^^ . . "1969-07-11Z"^^ . "John Kiffmeyer"@en .