Question: What month did South Park release the episode Put It Down?

Context paragraphs:
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.

Ganksta N-I-P: Lewayne Williams, (born, August 28, 1969, better known as Ganxsta N.I.P. pronounced Gangsta Nip) is a rapper from South Park, Houston, Texas and a member of the South Park Coalition, which he cofounded in 1987 with Houston rapper K-Rino.  In 1992 he released his debut album "South Park Psycho".  This record also help put the South Park Coalition name on the map due to world wide distribution from Rap-a-Lot.  He also wrote the Geto Boys hit "Chuckie".  NIP stands for "Nation of Islam is Powerful" he is also a part of The Nation of Islam.  Williams is also looked at as one of the creators of the horrorcore rap genre.

201 (South Park): "201" is the sixth episode of the fourteenth season of "South Park", and the 201st overall episode of the series.  It originally aired on Comedy Central in the United States on April 21, 2010.  The episode continued multiple storylines from the previous episode, "200", in which a group of angry celebrities demand South Park produce the Muslim prophet Muhammad.  In "201", a superhero-like group of religious figures team up to save South Park from the celebrities and their monster Mecha-Streisand, while Eric Cartman learns the true identity of his father.

Put It Down (South Park): "Put It Down" is the second episode in the twenty-first season of the American animated television series "South Park".  The 279th episode of the series overall, it first aired on Comedy Central in the United States on September 20, 2017.

Conjoined Fetus Lady: "Conjoined Fetus Lady" is the fifth episode in the second season of the American animated television series "South Park".  The 18th episode of the series overall, it originally aired on Comedy Central in the United States on June 3, 1998.  The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.  In the episode, South Park Elementary's dodgeball team travels to China to compete for the dodgeball championship, while the town of South Park pays tribute to the school nurse, who is living with conjoined twin myslexia.

Chickenlover: "Chickenlover" is the fourth episode in the second season of the American animated television series "South Park".  The 16th episode of the series overall, it originally aired on Comedy Central in the United States on May 27, 1998.  The episode was written by series co-creators Trey Parker and Matt Stone, along with David R. Goodman, and directed by Parker.  In the episode, Officer Barbrady resigns as South Park's only police officer because of his illiteracy.  Anarchy ensues, just as chickens are mysteriously being molested across South Park.  Barbrady enlists the help of the boys to learn to read and discover who is molesting the chickens.  Cartman, meanwhile, masquerades as a police officer.

City Sushi: "City Sushi" is the sixth episode of the fifteenth season of the American animated sitcom "South Park", and the 215th episode of the series overall.  It premiered on Comedy Central in the United States on June 1, 2011.  In the episode, Butters is misdiagnosed with multiple personality disorder.  Meanwhile, Tuong Lu Kim takes on South Park's new Japanese resident, who has put a sushi restaurant right next to his City Wok.

South Park Let's Go Tower Defense Play!: South Park Let's Go Tower Defense Play!  is a 2009 video game based on the American animated television series "South Park", released on the Xbox Live Arcade service for the Xbox 360 video game console.  The game was developed by Doublesix in collaboration with South Park Digital Studios and Xbox Live Productions.  "Let's Go Tower Defense Play" is a tower defense game, with the added element of being a fast-paced action game as well.  Thus, players do not only build towers to eliminate destructive forces, but they also have to control multiple characters in order to successfully protect the town of South Park.  "South Park Let's Go Tower Defense Play!"  is the first "South Park" video game released after three early titles released between 1998 and 2000.

South Park, Houston: South Park is a broad post-World War II development in the south-central area of Houston, Texas, a few miles south of MacGregor Park (from which it gets its name) and directly south of the 610 Loop.  According to the 2000 Census, the community has a population of 22,282.  81% of the South Park population is predominately African American, compared to 25% for the city as a whole.  Houston's Martin Luther King Boulevard runs through the area.  Reflecting its postwar origins, many streets in South Park are named after World War II battle sites and persons.  In the 1980s and 1990s crime became a key issue for South Park.  Katharine Shilcutt of the "Houston Press" said "South Park is an overgrown garden these days, its soil only able to be tilled by the most determined or the most desperate.  It shows no sign that it will grow again any time in the near future."

Fatbeard: "Fatbeard" is the seventh episode of the thirteenth season of the American animated television series "South Park".  The 188th overall episode of the series, it originally aired on Comedy Central in the United States on April 22, 2009 and in the United Kingdom on April 24, 2009.  It was the mid-season finale, marking the final "South Park" episode for six months.  In the episode, Cartman misinterprets news reports about piracy in the Indian Ocean to mean the return of the classic era of swashbuckling pirates, and misleads a handful of South Park boys to voyage to Mogadishu to start a pirate crew.

Supporting paragraphs: Put It Down (South Park) South Park (season 21)
Answer: September