Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_15 (winning_team VARCHAR, date VARCHAR, winning_manufacturer VARCHAR, winning_driver VARCHAR)

### Question ###
What is the winning team of the race on 31 August with Audi as the winning manufacturer and Timo Scheider as the winning driver?

### Accurate SQL ###

SELECT winning_team FROM table_name_15 WHERE winning_manufacturer = "audi" AND winning_driver = "timo scheider" AND date = "31 august"