Question:  "Bart Carny" is the twelfth episode from a season of "The Simpson" that began on what date?

Context paragraphs:
Goo Goo Gai Pan: "Goo Goo Gai Pan" is the twelfth episode from the sixteenth season of The Simpsons.  It originally aired on the Fox network in the United States on March 13, 2005.  The episode focuses on Selma Bouvier adopting a Chinese orphan after experiencing menopause.  Lucy Liu guest stars.  The original closing credits feature the show's director David Silverman giving viewers a quick lesson on how he draws Bart Simpson.  The episode was banned in the People's Republic of China.

Bart Carny: "Bart Carny" is the twelfth episode of "The Simpsons"<nowiki>'</nowiki> ninth season.  It originally aired on the Fox network in the United States on January 11, 1998.  Homer and Bart start working at a carnival and befriend a father and son duo named Cooder and Spud.  It was written by John Swartzwelder, directed by Mark Kirkland and guest stars Jim Varney as Cooder the carny.  The episode contains several cultural references and received a generally mixed critical reception.

Everything is Broken (Defiance): "Everything is Broken" is the twelfth episode of the first season of the American science fiction series Defiance, and the series' twelfth episode overall.  It was aired on July 8, 2013.  The episode was written by Kevin Murphy and directed by Michael Nankin.

The Simpsons (season 9): "The Simpsons"' ninth season originally aired on the Fox network between September 1997 and May 1998, beginning on Sunday, September 21, 1997, with "The City of New York vs. Homer Simpson".  The showrunner for the ninth production season was Mike Scully.  The aired season contained three episodes which were hold-over episodes from season eight, which Bill Oakley and Josh Weinstein ran.  It also contained two episodes which were run by David Mirkin, and another two hold-over episodes which were run by Al Jean and Mike Reiss.

Bart Gets Famous: "Bart Gets Famous" is the twelfth episode of "The Simpsons"<nowiki>'</nowiki> fifth season.  It originally aired on the Fox network in the United States on February 3, 1994.  In the episode, Bart gets a job as Krusty the Clown's production assistant.  However, he soon becomes sick of the job and comes close to quitting.  During one of his shows, Krusty says he needs to use Bart in a sketch.  Bart becomes an accidental star when he says, "I didn't do it" during the botched sketch.  He becomes famous for his catchphrase but soon becomes tired of being known for one line.

Unpleasantville: "Unpleasantville" is the twelfth episode of the first season of The CW television series, "The Vampire Diaries" and the twelfth episode of the series overall.  It originally aired on January 28, 2010.  The episode was written by Barbie Kligman and Brian Young and directed by Liz Friedlander.

Diggs (The Simpsons): "Diggs" is the twelfth episode of the 25th season of the American animated sitcom "The Simpsons", and the 542nd episode of the series.  It premiered on the Fox network in the United States on March 9, 2014.  The episode was written by Dan Greaney and Allen Glazier and directed by Michael Polcino.  In the episode, Bart makes friends with a transfer student named Diggs, an expert in falconry who saves Bart from the wrath of the Springfield Elementary bullies – and who intends to take to the sky himself, which makes Bart worry about Diggs' sanity.

I Married Marge: "I Married Marge" is the twelfth episode of "The Simpsons"<nowiki>'</nowiki> third season.  It originally aired on the Fox network in the United States on December 26, 1991.  In the episode, Marge worries that she may yet again be pregnant and drives to Dr. Hibbert's office.  While anxiously waiting, Homer begins to tell Bart, Lisa, and Maggie the story of how he and Marge got married and how Bart was born.

Not in My House: "Not in My House" is the twelfth episode of the first season of "Modern Family" and the twelfth episode of the series overall.  It premiered on ABC on January 13, 2010.  The episode was written by Caroline Williams and directed by Chris Koch.

Moe Goes from Rags to Riches: "Moe Goes from Rags to Riches" is the twelfth episode of the twenty-third season of the American animated sitcom "The Simpsons".  It originally aired on the Fox network in the United States on January 29, 2012.  In the episode, Moe Szyslak's old bar rag tells its history, from being a medieval French tapestry to ending up at Moe's bar.  Meanwhile, Bart and Milhouse have an argument which prompts Milhouse to leave Bart.  Jeremy Irons guest starred in the episode as the voice of Moe's bar rag.

Supporting paragraphs: Bart Carny The Simpsons (season 9)
Answer: September 21, 1997