Question: What is the first episode of the fifth season and the 81st overall episode of the American animated television sitcom "SpongeBob SquarePants" where Sirena Irwin voiced Mama Krabs?

Context articles: List of SpongeBob SquarePants guest stars
Extreme Spots
Friend or Foe (SpongeBob SquarePants)
Paul Tibbitt
SpongeBob, You're Fired
Sirena Irwin
SpongeBob SquarePants vs. The Big One
Pest of the West
Help Wanted (SpongeBob SquarePants)
List of SpongeBob SquarePants cast members

In addition to the show's regular cast of voice actors, guest stars have been featured on "SpongeBob SquarePants", an American animated television series created by marine biologist and animator Stephen Hillenburg for Nickelodeon.
 "SpongeBob SquarePants" chronicles the adventures and endeavors of the title character and his various friends in the fictional underwater city of Bikini Bottom.
 Many of the ideas for the show originated in an unpublished, educational comic book titled "The Intertidal Zone", which Hillenburg created in the mid-1980s.
 He began developing "SpongeBob SquarePants" into a television series in 1996 upon the cancellation of "Rocko's Modern Life", which Hillenburg directed.
 The pilot episode first aired on Nickelodeon in the United States on May 1, 1999.
 The show's ninth season premiered in 2012, and episodes of "SpongeBob SquarePants" have aired.
 A feature-length film adaptation of the show, "The SpongeBob SquarePants Movie", was released in 2004; in 2015, a sequel, "", was released.
"Extreme Spots" is the first episode of Season 9 and the 179th overall episode of the American animated television series "SpongeBob SquarePants".
 The episode originally aired on Nickelodeon in the United States on July 21, 2012.
 The series follows the adventures and endeavors of the title character and his various friends in the underwater city of Bikini Bottom.
 In this episode, SpongeBob and Patrick try to do their best to join extreme sports team the Drasticals, no matter how extreme, dangerous, or ludicrous it gets.
 It will see the duo try their hand at sand motor biking, hang gliding, seashell surfing and even extreme bubble blowing.
"Friend or Foe" is the first episode of the fifth season and the 81st overall episode of the American animated television sitcom "SpongeBob SquarePants".
 It was written by Casey Alexander, Zeus Cervas, Mike Mitchell, Steven Banks and Tim Hill, and the animation was directed by supervising director, Alan Smart and Tom Yasumi.
 Alexander, Cervas and Mitchell also function as storyboard directors.
 The episode originally aired on Nickelodeon in the United States on April 13, 2007.
Paul Harrison Tibbitt is an American animator, television producer, writer, storyboard artist, songwriter, voice actor, and director, best known for working on the animated series "SpongeBob SquarePants".
 He was the co-executive producer of the show and was also the voice of Potty the Parrot; he has also voiced DoodleBob and previously voiced Betsy Krabs before Sirena Irwin took over.
 He made his feature film directorial debut directing "".
 Tibbitt studied in the Character Animation program at the California Institute of the Arts.
"SpongeBob, You're Fired" is a television special of the American animated television series "SpongeBob SquarePants".
 It serves as the 11th episode of the ninth season and the 189th overall episode.
 The animation directors were the supervising director, Alan Smart and Tom Yasumi, and was written by Marc Ceccarelli, Luke Brookshier, and Mr. Lawrence.
 Ceccarelli and Brookshier also served as storyboard directors.
 The episode originally aired in Greece on July 3, 2013.
 In the United States, it aired on Nickelodeon on November 11.
 In this episode of the series, which follows the adventures and endeavors of the title character and his various friends in the underwater city of Bikini Bottom, SpongeBob gets fired from the Krusty Krab after Mr. Krabs discovers he can save a nickel by eliminating him.
 SpongeBob subsequently decides to apply at other restaurants.
Sirena Irwin is an actress whose credits include Mrs. SquarePants on the animated television comedy, "SpongeBob SquarePants".
 She also voiced Mama Krabs in the episodes "Enemy In-Law" and "Friend or Foe" among many others and also voiced Squilvia in "Love that Squid" (SpongeBob SquarePants).
 She was a series regular on Stan Lee's "Stripperella" as Persephone Cliche and has guest and co-starred in multiple television shows.
 She was a lead in "The Trip", a popular gay film.
 She also provided the voices for Mera and Lois Lane in "".
 In 2011 she premiered the role of Lucy Ricardo in "I Love Lucy: Live on Stage" in Los Angeles, and has toured with that show for several years.
 She was awarded Best Actress in a Touring Production at the BroadwayWorld Chicago Awards for the role.
"SpongeBob SquarePants vs. The Big One" is the 11th episode of the sixth season and the 111th overall episode of the American animated television series "SpongeBob SquarePants".
 The episode was written by Aaron Springer who also directed the stoyboards, Paul Tibbitt, and Steven Banks, and the animation was directed by Andrew Overtoom and supervising director, Alan Smart.
 The episode was part of the series' tenth anniversary celebration in 2009.
 It features guest appearances by Johnny Depp as the voice of Jack Kahuna Laguna, Bruce Brown as the narrator, and Davy Jones as himself.
 It originally aired on Nickelodeon in the United States on April 17, 2009.
"Pest of the West" is the 16th episode of the fifth season and the 96th overall episode of the American television sitcom "SpongeBob SquarePants".
 In this episode, SpongeBob finds that he is a distant relative of SpongeBuck SquarePants, a sheriff from Bikini Bottom's past who helped save the citizens from the quickest whip draw in town, the evil Dead Eye Plankton.
 It was written by Luke Brookshier, Tom King, Steven Banks and Richard Pursel, with Andrew Overtoom and Tom Yasumi serving as animation directors. Brookshier and King also functioned as storyboard directors.
"Help Wanted" is the pilot episode of the American animated television series "SpongeBob SquarePants".
 It originally aired on Nickelodeon in the United States on May 1, 1999, following the television airing of the 1999 Kids' Choice Awards.
 The episode follows the protagonist, an anthropomorphic sea sponge named SpongeBob SquarePants, attempting to get a job at a local restaurant called the Krusty Krab.
 However, he is tasked to find a seemingly non-existent high-caliber spatula because the owner, Mr. Krabs, considers him unqualified for the position.
 Eventually, crowds of ravenous anchovies stop by the Krusty Krab and demand meals.
 SpongeBob returns from his errand, having fulfilled the request of Mr. Krabs and found a mechanical spatula.
 He utilizes the spatula to fulfill the anchovies' hunger.
 SpongeBob is then welcomed by Mr. Krabs as a Krusty Krab employee.
"SpongeBob SquarePants" is an American animated television series created by marine biologist and animator Stephen Hillenburg that debuted on Nickelodeon in the United States on May 1, 1999.
 The regular voice cast consists of Tom Kenny, Clancy Brown, Rodger Bumpass, Bill Fagerbakke, Mr. Lawrence, Jill Talley, Carolyn Lawrence, Mary Jo Catlett and Lori Alan.
 Most one-off and background characters are voiced by Dee Bradley Baker, Sirena Irwin, Bob Joles, Mark Fite and Thomas F. Wilson.
 Throughout the show's run, it has employed numerous guest stars from many ranges of professions.
 Repeat guests include Ernest Borgnine, Tim Conway, Brian Doyle-Murray, Marion Ross, John O'Hurley and Michael McKean.