"Sponsored Content" is the eighth episode of the nineteenth season and the 265th overall episode of the animated television series "South Park", written and directed by the series co-creator Trey Parker, and is also the first episode of a three-episode story arc that serves as the season finale.
 The episode premiered on Comedy Central on November 18, 2015.
 It parodies the abundance of online advertising, native advertising and clickbaits while humorously linking them to artificial intelligence, while continuing its season-long lampoon of political correctness.
 The story arc of this episode continues into the following episode "Truth and Advertising" and concludes with the episode "PC Principal Final Justice".
"Die Hippie, Die" is the second episode in the ninth season of the American animated television series "South Park".
 The 127th episode overall, it originally aired on Comedy Central in the United States on March 16, 2005.
 In the episode, Cartman works to rid South Park from an infestation of hippies.
 The episode parodies the 2003 film "The Core".
The wedding of Prince William, Duke of Cambridge, and Catherine Middleton took place on 29 April 2011 at Westminster Abbey in London, United Kingdom.
 The groom, Prince William, Duke of Cambridge, is the eldest son of Charles, Prince of Wales and Diana, Princess of Wales, and second, after his father, in line to succeed his paternal grandmother, Queen Elizabeth II.
"Jared Has Aides" is the first episode of the sixth season of the adult American animated television series "South Park".
 It first aired on Comedy Central in the United States on March 6, 2002.
 The episode was rated TV-MA in the United States, except on syndicated broadcasts, where it is rated TV-14 instead.
 In the episode, weight loss advocate Jared Fogle incurs the wrath of South Park after he announces that he lost weight because he has aides (misinterpreted as AIDS).
 This leads the boys to try to use Butters as their own advocate for City Wok.
 The episode also parodies the film "Philadelphia".
"The Red Badge of Gayness" is episode 45 of Comedy Central's animated series "South Park".
 It originally aired on November 24, 1999.
 In the episode, the boys participate in the South Park Civil War reenactment.
 To win a bet, Cartman convinces the reenactors to try and alter history and leads them throughout the southern United States.
 The episode's name is a based on the Red Badge of Courage and parodies Ken Burn's Civil War Documentary and the film "Gettysburg."
"Royal Pudding" is the third episode of the fifteenth season of the American animated television series "South Park", and the 212th episode of the series overall.
 "Royal Pudding" premiered in the United States on Comedy Central on May 11, 2011.
 In the episode, which parodies the 2011 Wedding of Prince William and Catherine Middleton, the Prince of Canada's fiancee is abducted from their wedding altar, leading Ike Broflovski to answer the call to rescue her.
 "Royal Pudding" was written and directed by series co-creator Trey Parker, and was rated TV-MA L in the United States.
 The episode aired 12 days after the wedding.
"Major Boobage" is the third episode in season 12 of the American animated television series "South Park".
 The 170th episode of the series overall, it originally aired on Comedy Central in the United States on March 26, 2008.
 The episode was co-written by series creators Trey Parker and Matt Stone; it was the first South Park episode since 2000 not solely written by Parker, ending a streak of 120 consecutive straight solo episodes.
 The previous episode co-written by Stone was "The Tooth Fairy's Tats 2000".
"Free Willzyx" ( ) is the thirteenth episode in the ninth season of the American animated television series "South Park".
 The 138th overall episode, it originally aired on Comedy Central in the United States on November 30, 2005.
 In the episode, Kyle, Stan, Cartman and Kenny go to an amusement park and a killer whale, which is being kept in a giant tank there, speaks to them, telling them that it will die if it is not returned to its real home on the moon.
 They attempt to do this, unaware that the whole thing is just a prank being played on them by workers at the amusement park.
 The episode parodies the "Free Willy" film.
"Butters' Very Own Episode" is the fourteenth and final episode of the fifth season of the animated television series "South Park", and the 79th episode of the series overall.
 "Butters' Very Own Episode" originally aired in the United States on Comedy Central on December 12, 2001.
 In the episode, Butters survives a murder attempt by his own mother after discovering his father's homosexual dalliances and must travel back to South Park in time for his parents' wedding anniversary at Bennigan's.
 Meanwhile, Butters' parents join John and Patsy Ramsey, Gary Condit, and O. J. Simpson in lying to the press about who murdered Butters.
"Funnybot" is the second episode of the fifteenth season of the American animated television series "South Park", and the 211th episode of the series overall.
 "Funnybot" premiered in the United States on Comedy Central on May 4, 2011, the first time a "South Park" episode has aired in May since season 10's "Tsst" in 2006.
 "Funnybot" parodies The Comedy Awards, black comedian Tyler Perry, the Daleks from "Doctor Who", and the death of Osama bin Laden.

Question: The South Park episode "Royal Pudding" parodies a wedding that took place in what city?
Answer: London