CREATE TABLE table_1137702_3 (grand_prix VARCHAR, winning_constructor VARCHAR, pole_position VARCHAR)

How many Grand Prix were the winning constructor Benetton - Ford and the pole position was Michael Schumacher?
SELECT COUNT(grand_prix) FROM table_1137702_3 WHERE winning_constructor = "Benetton - Ford" AND pole_position = "Michael Schumacher"
SELECT COUNT("grand_prix") FROM "table_1137702_3" WHERE "Benetton - Ford" = "winning_constructor" AND "Michael Schumacher" = "pole_position"