Question: Who made their guest appearance first, The Dixie Chicks or Phil Hartman?

full_context: Document 1: In Marge We Trust: "In Marge We Trust" is the twenty-second episode of "The Simpsons"<nowiki>'</nowiki> eighth season. It originally aired on the Fox network in the United States on April 27, 1997. It was written by Donick Cary and directed by Steven Dean Moore. The episode guest stars Sab Shimono as Mr. Sparkle, Gedde Watanabe as the factory worker, Denice Kumagai and Karen Maruyama as dancers, and Frank Welker as the baboons. In the episode, Marge replaces Reverend Lovejoy as the town's moral adviser while Homer explores the mystery of why his face appears on a Japanese-language detergent box.
Document 2: Mr. Plow: "Mr. Plow" is the ninth episode of "The Simpsons"<nowiki>'</nowiki> fourth season. It originally aired on the Fox network in the United States on November 19, 1992. In the episode, Homer buys a snow plow and starts a business plowing driveways. It is a huge success, and inspired by this, Barney Gumble starts a rival company and quickly puts Homer out of business. The episode was written by Jon Vitti and directed by Jim Reardon. The episode was well received, with some critics calling it one of the best in the show's history. In 1993, Dan Castellaneta won his second Emmy Award for "Outstanding Voice-Over Performance" for this episode. The episode was also submitted in the "Outstanding Comedy Series" category although ultimately it was not nominated.
Document 3: The Twisted World of Marge Simpson: "The Twisted World of Marge Simpson" is the eleventh episode of "The Simpsons"<nowiki>'</nowiki> eighth season. It originally aired on the Fox network in the United States on January 19, 1997. It was written by Jennifer Crittenden and directed by Chuck Sheetz. The episode guest stars Jack Lemmon as Frank Ormand and Joe Mantegna as Fat Tony. In the episode, Marge starts her own business, selling pretzels.
Document 4: Colonel Homer: "Colonel Homer" is the twentieth episode of "The Simpsons"<nowiki>'</nowiki> third season. It originally aired on the Fox network in the United States on March 26, 1992. In the episode, Homer embarrasses his wife Marge at a movie theater, leading to a big argument between the two. Homer, angry at Marge, visits a redneck bar in the middle of the night where he meets a waitress named Lurleen Lumpkin, a talented singer. Homer becomes Lurleen's manager and tries to make her famous, but he does not appear aware that Lurleen has fallen in love with him. With Marge already upset and thinking Homer is cheating on her, he must decide on the importance of his marriage after Lurleen makes romantic advances toward him.
Document 5: Don't Fear the Roofer: "Don't Fear the Roofer" is the sixteenth episode of the sixteenth season of "The Simpsons". It first aired on the Fox network in the United States on May 1, 2005, and guest-stars comedian Ray Romano. The episode is a parody of the 2001 film "A Beautiful Mind". The episode received negative reviews from critics, but praise for Romano's performance.
Document 6: Treehouse of Horror XVI: "Treehouse of Horror XVI" is the fourth episode of the seventeenth season of "The Simpsons". It first aired on the Fox network in the United States on November 6, 2005. In the sixteenth annual "Treehouse of Horror", the Simpsons replace Bart with a robot son after Bart falls into a coma, Homer and various other male characters find themselves on a reality show where Mr. Burns hunts humans for sport, and costumed Springfieldians become whatever they are wearing, thanks to a witch who was disqualified from a Halloween costume contest. It was written by Marc Wilmore and directed by David Silverman. Terry Bradshaw and Dennis Rodman guest star as themselves. Around 11.63 million Americans tuned in to watch the episode during its original broadcast.
Document 7: 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.
Document 8: This Little Wiggy: "This Little Wiggy" is the eighteenth episode of "The Simpsons"<nowiki>'</nowiki> ninth season. It originally aired on the Fox network in the United States on March 22, 1998. It was written by Dan Greaney and directed by Neil Affleck. The episode sees Ralph Wiggum becoming friends with Bart. Phil Hartman guest stars as recurring character Troy McClure.
Document 9: The Springfield Files: "The Springfield Files" is the tenth episode of "The Simpsons"<nowiki>'</nowiki> eighth season. It originally aired on the Fox network in the United States on January 12, 1997. In the episode, Homer believes he has discovered an alien in Springfield. It was written by Reid Harrison and directed by Steven Dean Moore. Leonard Nimoy guest stars as himself and David Duchovny and Gillian Anderson guest star as agents Fox Mulder and Dana Scully, their characters on "The X-Files". The episode serves as a crossover with "The X-Files" and features numerous references to the series. The story came from former showrunners Al Jean and Mike Reiss, who returned to produce this episode while under contract with Disney. It received mostly positive reviews from critics; Jean and Reiss won an Annie Award for producing it.
Document 10: Marge vs. the Monorail: "Marge vs. the Monorail" is the twelfth episode of "The Simpsons"' fourth season. It originally aired on the Fox network in the United States on January 14, 1993. The plot revolves around Springfield's impulse purchase of a faulty monorail from a conman. The episode was written by Conan O'Brien and directed by Rich Moore. Recurring guest star Phil Hartman provided the voice of Lyle Lanley, while the American actor Leonard Nimoy made a guest appearance in this episode.
Document 11: Simpsoncalifragilisticexpiala(Annoyed Grunt)cious: "Simpsoncalifragilisticexpiala(Annoyed Grunt)cious" is the thirteenth episode of "The Simpsons"<nowiki>'</nowiki> eighth season. It originally aired on the Fox network in the United States on February 7, 1997. When Marge becomes stressed, the Simpsons hire a nanny, a Mary Poppins parody, Shary Bobbins (voiced by Maggie Roswell). The episode was directed by Chuck Sheetz and written and executive produced by Al Jean and Mike Reiss. It was the last episode for which Reiss received a writing credit. In 2014, Jean selected it as one of five essential episodes in the show's history.
Document 12: Marge in Chains: "Marge in Chains" is the 21st episode of "The Simpsons"<nowiki>'</nowiki> fourth season. It originally aired on the Fox network in the United States on May 6, 1993. In the episode, Marge is arrested for shoplifting after forgetting to pay for an item at the Kwik-E-Mart. The family hires attorney Lionel Hutz to defend her at trial, but she is found guilty and sentenced to 30 days imprisonment. Homer, and the rest of the family have trouble coping without Marge. The townspeople start a riot when an annual bake sale missing Marge fails to raise enough money for a statue of Abraham Lincoln and they have to settle for a statue of Jimmy Carter. Mayor Quimby has Marge released from jail in order to save his career and quell the riot.
Document 13: I Don't Wanna Know Why the Caged Bird Sings: "I Don't Wanna Know Why the Caged Bird Sings" is the fourth episode of "The Simpsons"<nowiki>'</nowiki> nineteenth season. It first aired on the Fox network in the United States on October 14, 2007. For the second time in the series, Marge helps a prison assailant. Marge meets Dwight (Steve Buscemi), a man who attempts to rob the bank the two are in. Marge promises that she would visit him in prison, should he turn himself in, but too frightened to go into the prison, she breaks her promise. It was written by Dana Gould and directed by Bob Anderson. Steve Buscemi makes his second guest appearance on the show, (originally appearing as himself in "Brake My Wife, Please") though this time he voiced a character, Dwight. Ted Nugent has a voice cameo. Julia Louis-Dreyfus makes a surprise guest return as Snake's girlfriend Gloria, who originally appeared in "A Hunka Hunka Burns in Love". During its first airing, the episode originally garnered 8.8 million viewers, higher than the previous episode.
Document 14: Papa Don't Leech: "Papa Don't Leech" is the sixteenth episode of "The Simpsons"<nowiki>'</nowiki> nineteenth season. It originally aired on the Fox network in the United States on April 13, 2008. It features the return of Lurleen Lumpkin (voiced by special guest star Beverly D'Angelo) from the third season episode "Colonel Homer", after an absence of sixteen years (though she appeared in a few quick cameos on such episodes as "Marge vs. the Monorail" and "Team Homer"). The Dixie Chicks also appear as themselves. It was written by Reid Harrison and directed by Chris Clements.
Document 15: The Simpsons (season 4): "The Simpsons"' fourth season originally aired on the Fox network between September 24, 1992 and May 13, 1993, beginning with "Kamp Krusty". The showrunners for the fourth production season were Al Jean and Mike Reiss. The aired season contained two episodes which were hold-over episodes from season three, which Jean and Reiss also ran. Following the end of the production of the season, Jean, Reiss and most of the original writing staff left the show. The season was nominated for two Primetime Emmy Awards and Dan Castellaneta would win one for his performance as Homer in "Mr. Plow". The fourth season was released on DVD in Region 1 on June 15, 2004, Region 2 on August 2, 2004 and in Region 4 on August 25, 2004.
ground_truth: Phil Hartman