The eleventh season of "South Park", an American animated television series created by Trey Parker and Matt Stone, began airing on March 7, 2007.
 The 11th season concluded after 14 episodes on November 14, 2007.
 This is the first season to have uncensored episodes available for DVD release.
 This is also the season featuring the three-part, Emmy Award-winning episode "Imaginationland" (which was released separately on DVD with scenes not shown in the televised version before being packaged with the rest of the season 11 episodes as part of the complete season DVD).
 Parker was the director and writer of this eleventh season.
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.
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.
Purple Onion is the only studio album by The Les Claypool Frog Brigade, released on September 24, 2002.
 It followed two live releases by the band, and is the first release of the Frog Brigade's original compositions.
 While the Brigade regulars are consistent on much of the record such as Jay Lane, Eenor, Skerik and new percussionist Mike "Tree Frog" Dillon, many special guests appear on the album as well.
 Guests on multiple tracks include Ben Barnes and Sam Bass (then both from Deadweight).
 "D's Diner," a tribute to a Sebastopol, California restaurant, features sitar player Gabby La La in addition to the triple-bass onslaught of Claypool, Norwood Fisher (Fishbone) and Lonnie Marshall (Weapon of Choice).
 Warren Haynes (Allman Brothers Band) adds slide guitar on the "Buzzards of Green Hill" and Fish Fisher (Fishbone drummer) guests on "Whamola."
 "Whamola" was a live show staple named after the unique instrument Les employs—a one-string bass played with a drumstick.
 The song later appeared as a remix for the theme of "South Park Season 10". "
Barrington Hall" is a tribute to the UC Berkeley student housing known in the 1960s-1980s for counterculture.
"The Most Popular Girls in School" (abbreviated "MPGIS") is an American stop-motion animated comedy web series that debuted on YouTube on May 1, 2012.
 Created by Mark Cope and Carlo Moss, the series animates Barbie, Ken and other fashion dolls, usually with customized costumes and hairstyles, as various characters.
 "MPGIS" follows the exploits of the fictional Overland Park High School cheerleading squad and their friends, family and enemies. "
Variety" described the series as ""Mean Girls" meets "South Park"".
 To date, over 80 episodes have been released.
 The first episode has been viewed over 8.5 million times, and many episodes have received views in the millions.
 After a two year hiatus, the fifth season premiered June 13, 2017.
South Park 10: The Game is a mobile game based on the animated television series "South Park".
 The game was developed by Mr.Goodliving, published by RealNetworks and was released on 28 March 2007.
 The game is a standard platform game with abilities to pick up objects and use them to reach heights.
 Most of the moves are exclusive to each playable character in the game.
 The game was released after the television conclusion of South Park season 10 in late 2006.
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.
Casa Bonita ("Spanish; literally means "pretty house"") is a former chain of Mexican-themed "eatertainment" restaurants which originated in Oklahoma City.
 As of 2015, only one location remained open, in the western Denver suburb of Lakewood, Colorado.
The Most Popular Girls in School (abbreviated MPGIS) is an American stop-motion animated comedy web series that debuted on YouTube on May 1, 2012.
 Created by Mark Cope and Carlo Moss, the series animates Barbie, Ken and other fashion dolls, usually with customized costumes and hairstyles, as various characters.
 "MPGIS" follows the exploits of the fictional Overland Park High School cheerleading squad and their friends, family and enemies. "
Variety" described the series as ""Mean Girls" meets "South Park"".
 The first episode has been viewed over 8.5 million times, and many episodes have received views in the millions.
 Over 80 episodes have been released to date.
"Casa Bonita" is the eleventh episode of the seventh season of the American animated television series "South Park", and the 107th episode of the series overall.
 It first aired on Comedy Central in the United States on November 12, 2003.
 In the episode, Cartman misleads Butters into going missing in order to gain an invitation to Kyle's birthday party.
 The titular restaurant in the episode is based on the real-life Casa Bonita, a chain of Mexican-themed restaurants in Denver, Colorado.

Question: How many episodes did the South Park season featuring the episode "Casa Bonita" have?
Answer: 15