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_49879 ( "Round" real, "Circuit" text, "Date" text, "Pole Position" text, "Fastest Lap" text, "Winning Driver" text, "Winning Team" text )

### Question ###
Which Winning Team has the Fastest Lap of brendon hartley, and a Pole Position of oliver turvey, and a Circuit of spa-francorchamps, and the Winning Driver of brendon hartley?

### Accurate SQL ###

SELECT "Winning Team" FROM table_49879 WHERE "Fastest Lap" = 'brendon hartley' AND "Pole Position" = 'oliver turvey' AND "Circuit" = 'spa-francorchamps' AND "Winning Driver" = 'brendon hartley'