Table: tv_1986
Columns: show
last_aired
previous_network
retitled_as_same
new_returning_same_network
returning

Question: When was the show 9 to 5 returning?
SQL: SELECT "returning" FROM tv_1986 WHERE "show" = '9 to 5'

Question: What was the earliest aired show that's returning on September 13?
SQL: SELECT MIN("last_aired") FROM tv_1986 WHERE "returning" = 'september 13'