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_26 (constructor VARCHAR, fastest_lap VARCHAR, winning_driver VARCHAR)

### Question ###
What is the constructor of the race with Juan Manuel Fangio as the fastest lap and Giuseppe Farina as the winning driver?

### Accurate SQL ###

SELECT constructor FROM table_name_26 WHERE fastest_lap = "juan manuel fangio" AND winning_driver = "giuseppe farina"