user: Question: Where did the Gould Rex Mays Classic 150 occur?
Columns: ['Sanctioning', 'Race Name', 'Circuit', 'City/Location', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Joint CART/USAC (CRL)', 'Datsun Twin 200', 'Ontario Motor Speedway', 'Ontario, California', 'April 13']
SQL:

assistant: SELECT "City/Location" FROM "Table" WHERE "Race Name" = 'Gould Rex Mays Classic 150';