user: Question: Who the GM winning team when the EP winning team was #37 Porsche? 
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 "GM Winning Team" FROM "Table" WHERE "EP Winning Team" = '#37 Porsche';