CREATE TABLE table_3306 ("Circuit" CLOB, "Location" CLOB, "Date" CLOB, "Series" CLOB, "Winning driver" CLOB, "Winning team" CLOB)

What was the location when the winning driver was Nathana l Berthon?
SELECT "Location" FROM table_3306 WHERE "Winning driver" = 'Nathanaël Berthon'
SELECT "Location" FROM "table_3306" WHERE "Winning driver" = 'Nathanaël Berthon'