user: Question: Who was the HP winning team when the EP winning team was Hans Zereis and the GM winning team was Charles Gibson? 
Columns: ['Rnd', 'Circuit', 'AP Winning Team', 'BP Winning Team', 'CM Winning Team', 'CP Winning Team', 'DM Winning Team', 'DP Winning Team', 'EM Winning Team', 'EP Winning Team', 'FM Winning Team', 'FP Winning Team', 'GM Winning Team', 'GP Winning Team', 'HM Winning Team', 'HP Winning Team', 'Results']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Marlboro', 'Shelby', 'Chevrolet', 'Genie- Ford', 'Porsche', 'Ferrari', 'Triumph', 'Elva - Porsche', 'Porsche', 'Elva', 'Lotus', 'Lola', 'Triumph', 'Osca', 'Austin-Healey', 'Results']
SQL:

assistant: SELECT "HP Winning Team" FROM "Table" WHERE "EP Winning Team" = 'Hans Zereis' AND "GM Winning Team" = 'Charles Gibson';