Question: Lena Dunham guest stars as "Betty" on the 48th epidsode of a tv series set in what post apocalyptic land? 
Sentence (from "Adventure Time (season 5)"): Finn and Jake live in the post-apocalyptic Land of Ooo, where they interact with the other main characters of the show: Princess Bubblegum, The Ice King, Marceline the Vampire Queen, Lumpy Space Princess, BMO, and Flame Princess.
Relevant evidence: Yes