Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_1137702_3 (grand_prix VARCHAR, winning_constructor VARCHAR, pole_position VARCHAR)
### Question:
How many Grand Prix were the winning constructor Benetton - Ford and the pole position was Michael Schumacher?
### Answer:
SELECT COUNT(grand_prix) FROM table_1137702_3 WHERE winning_constructor = "Benetton - Ford" AND pole_position = "Michael Schumacher"