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?

full_context: Document 1: You're Getting Old: "You're Getting Old" is the seventh episode and the mid-season finale of the fifteenth season of the American animated television series "South Park", and the 216th episode of the series overall. It first aired on Comedy Central in the United States on June 8, 2011. In the episode, Stan begins to develop a profound sense of cynicism after celebrating his tenth birthday, where he is literally seeing everything as "crap". Meanwhile, Randy latches onto a new music genre, "tween wave," in an attempt to fit in, which causes problems in his marriage with Sharon.
Document 2: South Park (season 12): The twelfth season of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 12, 2008. The twelfth season concluded after 14 episodes on November 19, 2008. "Saturday Night Live" cast member Bill Hader is credited as a consultant starting with this season. Parker was the director and writer in this twelfth season. Stone was also the writer on the third episode of the twelfth season.
Document 3: Goth Kids 3: Dawn of the Posers: "Goth Kids 3: Dawn of the Posers" is the fourth episode in the seventeenth season of the American animated television series "South Park". The 241st episode of the series overall, it premiered on Comedy Central in the United States on October 23, 2013. It was originally scheduled to air October 16, but a power outage that occurred at South Park Studios prevented the episode from being finished in time, breaking a streak of 240 episodes aired consecutively without ever missing a single deadline. The episode satirizes the goth, emo and vampire teen subcultures, and uses plot elements from the film "Invasion of the Body Snatchers". The episode received a mixed critical reception.
Document 4: South Park (season 9): Season nine of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 9, 2005. The ninth season concluded after 14 episodes on December 7, 2005. All of the episodes in the ninth season were written and directed by Trey Parker.
Document 5: South Park (season 7): Season seven of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 19, 2003. The seventh season concluded after 15 episodes on December 17, 2003, and was written and directed by Trey Parker.
Document 6: Cartman's Mom Is a Dirty Slut: "Cartman's Mom Is a Dirty Slut" is the first season finale of the American animated television series "South Park". It originally aired on Comedy Central in the United States on February 25, 1998. The episode is the highest viewed episode in the entire "South Park" series, with 6.4 million views. It is part one of a two-episode story arc, which concluded with "Cartman's Mom Is Still a Dirty Slut". The episode follows Eric Cartman, one of the show's child protagonists, becoming curious about the identity of his father. He discovers that his father is most likely a man his mother had sexual intercourse with during an annual party called "The Drunken Barn Dance". Meanwhile, his friends Stan, Kyle and Kenny participate on "America's Stupidest Home Videos", after filming Cartman playing in his yard with plush toys.
Document 7: A Very Crappy Christmas: "A Very Crappy Christmas" is the seventeenth and final episode of the fourth season of the animated television series "South Park", and the 65th episode overall. It first aired on Comedy Central in the United States on December 20, 2000. In the episode, Kyle awaits Mr. Hankey on Christmas, but he does not show up. To try to spread some Christmas cheer, Kyle and the boys decide to create their own animated special.
Document 8: South Park (season 2): Season two of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on April 1, 1998. The second season concluded after 18 episodes on January 20, 1999; it remains the longest season of "South Park" to date. While most of the episodes were directed by series creator Trey Parker, Season 2 includes two episodes directed by Eric Stough.
Document 9: South Park (season 10): The tenth season of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 22, 2006. The tenth season concluded after 14 episodes on November 15, 2006. This is the first season in which Kenny does not die and the last season featuring Isaac Hayes (the voice of Chef) as Hayes quit the show following the backlash behind season nine's "Trapped in the Closet" episode. This season also had a minor controversy when the Halloween episode "Hell on Earth 2006" depicted "The Crocodile Hunter's" Steve Irwin with a stingray lodged in his chest getting thrown out of Satan's Halloween party for not being in costume. Episode 2 in this season is the last one with the Braniff Airlines logo. All the episodes in this season were written and directed by Trey Parker.
Document 10: The Poor Kid: "The Poor Kid" is the fifteenth season finale of the American animated television series "South Park", and the 223rd episode of the series overall. It first aired on Comedy Central in the United States on November 16, 2011. In the episode, Kenny and his brother and sister are sent to a foster home after police discover a meth lab in their house. As a result, Cartman is left with feelings of loss, since he no longer has someone to ridicule for their poverty.
Document 11: The Last of the Meheecans: "The Last of the Meheecans" is the ninth episode of the fifteenth season of the American animated television series "South Park", and the 218th episode of the series overall. It first aired on Comedy Central in the United States on October 12, 2011. In the episode, what begins as an innocent game between the boys turns serious when Cartman joins the U.S. Border Patrol. Unsurprisingly, Cartman turns out to be really good at stopping Mexicans.
Document 12: South Park (season 6): Season six of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 6, 2002. The sixth season concluded after 17 episodes on December 11, 2002. This season is notable for being the only one without Kenny as a main character, as he was written off in the previous season. Kenny, however, plays a part in some episodes without appearing and returns at the conclusion of the final episode.
Document 13: South Park (season 15): The fifteenth season of the American animated sitcom "South Park" began airing on Comedy Central on April 27, 2011 and ended on November 16, 2011. In response to reactions to the mid-season finale episode "You're Getting Old", which seemed to insinuate that creators Trey Parker and Matt Stone were wrapping up the series, Comedy Central proclaimed through the media that "South Park" was renewed for two more seasons, and the duo were signed through 2013. 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. Parker was the director and writer for all episodes, and Robert Lopez was the writer in this eleventh episode for the fifteenth season.
Document 14: Cartman Gets an Anal Probe: "Cartman Gets an Anal Probe" is the first episode of the American animated television series "South Park". It first aired on Comedy Central in the United States on August 13, 1997. The episode introduces child protagonists Eric Cartman, Kyle Broflovski, Stan Marsh and Kenny McCormick, who attempt to rescue Kyle's younger brother Ike from being abducted by aliens.
Document 15: South Park (season 21): The twenty-first season of the American animated sitcom "South Park" premiered on Comedy Central on September 13, 2017, and will contain ten episodes.
ground_truth: The Poor Kid