CREATE TABLE "list_of_imperial_vicars_1437_1792" (
  "interregnum_began" text,
  "interregnum_ended" text,
  "duration" text,
  "count_palatine_of_saxony" text,
  "count_palatine_of_the_rhine" text
);

Question: What is the Interregnum ended for Count Palatine of Saxony of frederick augustus i, elector of saxony?
SQL: SELECT "interregnum_ended" FROM "list_of_imperial_vicars_1437_1792" WHERE "count_palatine_of_saxony"='frederick augustus i, elector of saxony';

Question: What is the Interregnum ended for Count Palatine of Saxony of john george ii, elector of saxony?
SQL: SELECT "interregnum_ended" FROM "list_of_imperial_vicars_1437_1792" WHERE "count_palatine_of_saxony"='john george ii, elector of saxony';

Question: What is the duration for Count Palatine of the Rhine of charles albert, elector of bavaria?
SQL: SELECT "duration" FROM "list_of_imperial_vicars_1437_1792" WHERE "count_palatine_of_the_rhine"='charles albert, elector of bavaria';

Question: What is the name of the Count Palatine of the Rhine with a Interregnum began of 2 april 1657 death of ferdinand iii?
SQL: SELECT "count_palatine_of_the_rhine" FROM "list_of_imperial_vicars_1437_1792" WHERE "interregnum_began"='2 april 1657 death of ferdinand iii';

Question: What is the Interregnum ended for the person with a Duration of 3 months, 6 days?
SQL: SELECT "interregnum_ended" FROM "list_of_imperial_vicars_1437_1792" WHERE "duration"='3 months, 6 days';