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_1137704_2 (report VARCHAR, winning_constructor VARCHAR, grand_prix VARCHAR)
### Question:
what are all the report where winning constructor is williams - renault and grand prix is south african grand prix
### Answer:
SELECT report FROM table_1137704_2 WHERE winning_constructor = "Williams - Renault" AND grand_prix = "South African grand_prix"