The 7th Season
It's the 17th episode in the 18th season.
"Separate Vocations" is the 18th episode of The Simpsons' third seasonHope this helps
The eighth episode of nineteenth season
That was the final episode of season 11.
season 18 episode 17
The Simpsons "Nightmare on Evergreen Terrace" (A parody of Nightmare on Elm Street) is the middle part of Treehouse of Horror VI which is Season 7 episode 6
season 11 episode missionary impossible
"Homer the Whopper" is the 1st episode in the 21st season.
Season 9 - Episode 23 - King Of The Hill
"I am Furious Yellow", season: 13, episode: 18
Season Nine's Trash of the Titans
It is from the 14th episode of the 12th season.