Question: "Truth and Advertising" is the ninth episode of the nineteenth season and the 266th overall episode of twhich animated television series, written and directed by series co-creator Trey Parker?

Context paragraphs:
Truth and Advertising: "Truth and Advertising" is the ninth episode of the nineteenth season and the 266th overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  It is the second part of a three-episode story arc which began with the previous episode "Sponsored Content" and concludes with the following episode "PC Principal Final Justice" that together serve as the season finale.  It premiered on Comedy Central on December 2, 2015.  Like the previous episode, this episode continues to parody the abundance of online advertising while continuing its season-long lampoon of political correctness.

Naughty Ninjas: "Naughty Ninjas" is the seventh episode of the nineteenth season and the 264th overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on November 11, 2015.  Continuing the season's theme of political correctness, the plot primarily lampoons police brutality.

The City Part of Town: "The City Part of Town" is the third episode of the nineteenth season and the 260th overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on September 30, 2015.  The episode primarily tackles gentrification and continues the season-long parody of political correctness.

You're Not Yelping: "You're Not Yelping" is the fourth episode of the nineteenth season and the 261st overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on October 14, 2015.  The episode primarily parodies the popularity of Yelp restaurant reviews.

Safe Space (South Park): "Safe Space" is the fifth episode of the nineteenth season and the 262nd overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on October 21, 2015.  It parodies the idea of safe spaces while also continuing the season-long lampoon on political correctness.

PC Principal Final Justice: "PC Principal Final Justice" (also known as "PC Principal") is the tenth and final episode of the nineteenth season and the 267th overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on December 9, 2015.  It is the third and final part of a three-episode story arc that began with the episode "Sponsored Content" and continued in the episode "Truth and Advertising", which collectively serve as the season finale.  The episode parodies the abundance of online advertising, as well as gun politics in the United States, as part of its season-long lampoon of political correctness.

Tweek x Craig: "Tweek x Craig" is the sixth episode of the nineteenth season and the 263rd overall episode of the animated television series "South Park", written and directed by series co-creator Trey Parker.  The episode premiered on Comedy Central on October 28, 2015.  The episode parodies the slash fiction genre of yaoi art and the acceptance of the LGBT community, while continuing its season-long lampoon of political correctness.

Trey Parker: Randolph Severn "Trey" Parker III (born October 19, 1969) is an American actor, animator, writer, director, producer, singer, and songwriter.  He is known for co-creating "South Park" (1997–present) along with his creative partner Matt Stone, as well as co-writing and co-directing the Tony Award-winning musical "The Book of Mormon" (2011).  Parker was interested in film and music as a child, and attended the University of Colorado, Boulder following high school, where he met Stone.  The two collaborated on various short films, and starred in a feature-length musical, titled "Cannibal!  The Musical" (1993).

Sponsored Content (South Park): "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".

Rehash (South Park): "#REHASH" is the ninth episode in the eighteenth season of the American animated television series "South Park".  The 256th overall episode, it was written and directed by series co-creator and co-star Trey Parker.  The episode premiered on Comedy Central in the United States on December 3, 2014.  The episode is part one of the two-part season finale.  The episode lampoons the popularity of Internet Let's Play celebrities and the phenomena of Internet trending topics that lack actual relevance.  The episode also references and intertwined multiple elements from previous episodes in the eighteenth season of "South Park".  YouTube celebrity PewDiePie plays himself in this episode.

Supporting paragraphs: Truth and Advertising Trey Parker
Answer: South Park