Question: Pamela Morgan Halpert, is a fictional character on the U.S. television sitcom "The Office", played by Jenna Fischer, an American actress, and is widely known for her portrayal as Pam Beesly, on which organization?

Context paragraphs:
Dawn Tinsley: Dawn Tinsley is a fictional character in the BBC sitcom "The Office", played by Lucy Davis.  She is a receptionist for paper merchants Wernham Hogg and was originally engaged to warehouse worker Lee.  Her American "The Office" equivalent is Pam Beesly.  She is also the inspiration for Laetitia Kadiri in the French version of the show, "Le Bureau", and Anne Viens in the Québécois version, "La Job".

Beach Games: "Beach Games" is the twenty-third episode of the third season of the US version of "The Office", and the 51st of the series.  In this episode, the office goes to a nearby lake for some "beach games".  It is revealed that Michael (Steve Carell) is being interviewed for a position at Corporate and that the winner of the beach games will become regional manager.  Meanwhile, Dwight (Rainn Wilson) and Angela (Angela Kinsey) sabotage Andy (Ed Helms), and Pam (Jenna Fischer) spends her day taking notes of the office workers' activities.

The Negotiation: "The Negotiation" (originally titled "Labor Negotiation") is the nineteenth episode of the third season of the American comedy television series "The Office", and the show's forty-seventh episode overall.  The series depicts the everyday lives of office employees in the Scranton branch of the fictional Dunder Mifflin Paper Company.  In this episode, Roy Anderson (David Denman) tries to attack Jim Halpert (John Krasinski) for kissing Pam Beesly (Jenna Fischer) on Casino Night, only to be pepper-sprayed by Dwight Schrute (Rainn Wilson).  Jim repeatedly tries to thank Dwight for his actions, but each attempt is rejected.  Meanwhile, with Roy fired, Darryl Philbin (Craig Robinson) asks for a raise and is astounded when he learns that this raise would cause him to be paid more than his boss, Michael Scott (Steve Carell).

Pam Beesly: Pamela Morgan Halpert (née Beesly; born March 25, 1979) is a fictional character on the U.S. television sitcom "The Office", played by Jenna Fischer.  Her counterpart in the original UK series of "The Office" is Dawn Tinsley.  Her character is initially the receptionist at the paper distribution company Dunder Mifflin, before becoming a saleswoman and eventually office administrator until her termination in the series finale.  Her character is shy, growing assertive but amiable, and artistically inclined, and shares romantic interest with Jim Halpert, whom she begins dating in the fourth season and marries and starts a family with as the series continues.

Jennifer Celotta: Jennifer Ann Celotta (born November 11, 1971 in Gaithersburg, Maryland) is an American television producer and writer.  Among her credits are "Home Improvement", "Malcolm in the Middle", "The Newsroom", "Greg the Bunny", "Andy Richter Controls The Universe" and "The Office".  She has directed two episodes of "The Office": "Crime Aid" and "The Promotion."  By the fifth season, Celotta was serving as an "Office" producer and one of the series show runners, along with fellow writer Paul Lieberstein.  Celotta and Lieberstein wrote the fifth season finale "Company Picnic", which ended with character Pam Beesly learning she is pregnant.  In May 2009, Celotta said the sixth season would include a wedding for Jim and Pam, although at the time she said the specifics of it had not been worked out yet.

Sing (Travis song): "Sing" is the lead single from indie rock band Travis' third studio album, "The Invisible Band".  It was released in the United Kingdom on 28 May 2001, following an extensive five-week promotional campaign.  The song reached a peak position of number three on the UK Singles Chart.  "Sing" was a worldwide success, reaching top ten in several countries in Europe and Latin America.  The song can be heard in The Office on various occasions as the unofficial song of Jim Halpert and Pam Beesly.  The song is noted for its prominent use of the banjo (played by Andy Dunlop), a country music instrument then considered rare for mainstream pop.

Jenna Fischer: Regina Marie "Jenna" Fischer (born March 7, 1974) is an American actress.  She is widely known for her portrayal as Pam Beesly on the NBC sitcom "The Office", for which she received critical acclaim and was nominated for the Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series in 2007.

Pam Ewing: Pamela Barnes Ewing is a fictional character from the CBS primetime soap opera, "Dallas".  Pamela is portrayed by actress Victoria Principal, first appearing on the show in the first episode, entitled "Digger's Daughter", which was first broadcast on April 2, 1978.  "Dallas" follows the trials of the wealthy Ewing oil family in the city of Dallas, Texas, which Pam has married into.  Principal played Pam until the end of the tenth season of "Dallas" in 1987, when the character crashes into a truck carrying butane and propane and her body is severely burned.  After this, she is briefly played by actress Margaret Michaels in an attempt to write the character out.  Pamela's storylines in season 1 focus on her relationship with her new husband, Bobby Ewing (Patrick Duffy), and her fight against the considerable suspicion and hostility from within the Ewing family, due to Pamela being a member of the Barnes family.  Pamela's love for Bobby remains a strong character trait throughout her tenure on the show, noted for its similarities to "Romeo and Juliet", with two people from hostile families falling in love.

Christening (The Office): "Christening" is the seventh episode of the seventh season of the American version of the comedy television series "The Office" and the show's 133rd episode overall.  Written by Peter Ocko and directed by Alex Hardcastle, the episode aired on November 4, 2010 on NBC in the United States.  The episode guest stars Linda Purl as Helene Beesly, Rick Overton as William Beesly, Robert Pine as Mr. Halpert, Perry Smith as Betsy Halpert, Bobby Ray Shafer as Bob Vance, and Peggy Stewart as Sylvia.

Jim Halpert: Jim Halpert (born October 1, 1978) is a fictional character in the U.S. version of the television sitcom "The Office", portrayed by John Krasinski.  The character is based on Tim Canterbury from the original version of "The Office".  The character is named after a childhood friend of executive producer Greg Daniels.  He is introduced as a sales representative at the Scranton branch of paper distribution company Dunder Mifflin, before transferring to the Stamford branch in the third season.  Upon the merger of Scranton and Stamford branches, he becomes Assistant Regional Manager, and later co-manager alongside Michael Scott during the sixth season episode arc from "The Promotion" to "The Manager and the Salesman".  After Dunder Mifflin is bought by Sabre Corporation, Jim is very briefly the sole regional manager of the branch, before returning to the Sales department until his requested termination in the series finale.

Supporting paragraphs: Pam Beesly Jenna Fischer
Answer: NBC