question: "Kenny Dies" is the 13th episode of an animated series created by what two people?
answer: Trey Parker and Matt Stone
context: Title: Your Fault (Desperate Housewives)
  Passage: "Your Fault" is the 13th episode of the ABC television series, "Desperate Housewives".  The episode was the 13th episode for the show's first season.  The episode was written by Kevin Etten and was directed by Arlene Sanford.  It originally aired on Sunday January 23, 2005.
  Title: Kenny Dies
  Passage: "Kenny Dies" is the thirteenth episode of the fifth season of the animated television series "South Park", and the 78th episode of the series overall.  "Kenny Dies" originally aired in the United States on December 5, 2001 on Comedy Central.  In the episode, Cartman comes across a truckload of fetuses he cannot sell thanks to a recent government ruling on stem cell research.  When Kenny is diagnosed with a terminal illness, Cartman uses it to lobby Congress to restore stem cell research.
  Title: South Park
  Passage: South Park is an American adult animated sitcom created by Trey Parker and Matt Stone and developed by Brian Graden for the Comedy Central television network.  The show revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their bizarre adventures in and around the titular Colorado town.  Much like "The Simpsons", "South Park" uses a very large ensemble cast of recurring characters and became infamous for its profanity and dark, surreal humor that satirizes a wide range of topics towards a mature audience.
citations: Kenny Dies South Park