Question: The fifteenth season of the American animated sitcom "South Park" began airing on Comedy Central on April 27, 2011, what's the title of the fifteenth season finale of the American animated television series "South Park", and the 223rd episode of the series overall?
Sentence (from "South Park (season 15)"): Shortly before the airing of the season finale episode "The Poor Kid", "South Park" was extended again until 2016, taking the show to 20 seasons.
Relevant evidence: Yes