CREATE TABLE table_name_37 (interregnum_ended VARCHAR2, count_palatine_of_saxony VARCHAR2)

What is the Interregnum ended for Count Palatine of Saxony of frederick augustus i, elector of saxony?
SELECT interregnum_ended FROM table_name_37 WHERE count_palatine_of_saxony = "frederick augustus i, elector of saxony"
SELECT "interregnum_ended" FROM "table_name_37" WHERE "count_palatine_of_saxony" = "frederick augustus i, elector of saxony"