Question: The second season of "The Office" was an adaptation of which other network's series?

full_context: Document 1: The Office Christmas specials: "The Office" Christmas Specials are the two-part final episode of the British mockumentary comedy television series "The Office". The specials were commissioned after the series' creators, Ricky Gervais and Stephen Merchant, announced that they would not write a full third series of the show. The first 45-minute part was broadcast on BBC One on 26 December 2003, and the second 50-minute part was shown the following evening. The episodes are presented in the style of "revisited" documentaries common on British television, in which popular "docusoaps" (e.g. "Airport"), are brought back for one-off specials several years after the series concluded. David Brent (Gervais), forcibly made redundant at the end of the second series, is now a travelling salesman of cleaning supplies. Tim Canterbury (Martin Freeman) and Gareth Keenan (Mackenzie Crook) are still working at the offices of Wernham Hogg, and former Wernham Hogg receptionist Dawn Tinsley (Lucy Davis) now lives in Florida, though is flown back to Britain by the documentary crew to reunite with her old colleagues.
Document 2: Diversity Day (The Office): "Diversity Day" is the second episode of the first season of the American comedy television series "The Office", and the show's second episode overall. Written by B. J. Novak and directed by Ken Kwapis, it first aired in the United States on March 29, 2005, on NBC. The episode guest stars "Office" consulting producer Larry Wilmore as Mr. Brown.
Document 3: Pilot (The Office): "Pilot" is the first episode of the first season of the American comedy television series "The Office", and the show's first episode overall. The episode premiered in the United States on NBC on March 24, 2005. The episode's teleplay was adapted by Greg Daniels from the original script of the first episode of the British version written by Ricky Gervais and Stephen Merchant. The episode was directed by Ken Kwapis.
Document 4: List of The Office (UK TV series) episodes: "The Office" is a British sitcom that was originally broadcast by the BBC in the United Kingdom from 2001 to 2003. The television programme was created and written by Ricky Gervais and Stephen Merchant; the former also played the main character, manager David Brent. The series is set in the Slough office of a fictional paper merchant, Wernham Hogg, and is presented in a mockumentary format depicting the everyday lives of its employees.
Document 5: Secretary's Day (The Office): "Secretary's Day" is the 22nd episode of the sixth season of the U.S. comedy series "The Office" and the show's 122nd episode overall. It aired on April 22, 2010 on NBC. It was written by Mindy Kaling, who portrays Kelly Kapoor on the series, and is also the second episode directed by Steve Carell, who portrays Michael Scott.
Document 6: Greg Daniels: Gregory Martin "Greg" Daniels (born June 13, 1963) is an American television comedy writer, producer, and director. He is known for his work on several television series, including "Saturday Night Live", "The Simpsons", "Parks and Recreation", "King of the Hill" and "The Office". All four shows were named among "Time"' s James Poniewozik's All Time 100 TV Shows. Daniels attended Harvard University and he became friends with Conan O'Brien. Their first writing credit was for "Not Necessarily the News", before they were laid off due to budget cuts. He eventually became a writer for two long-running series: "Saturday Night Live" and "The Simpsons".
Document 7: The Office (U.S. season 9): The ninth and final season of the American television comedy "The Office" premiered on NBC on September 20, 2012, and concluded on May 16, 2013, consisting of 25 episodes. "The Office" is an American adaptation of the British comedy series of the same name, and is presented in a mockumentary format, portraying the daily lives of office employees in the Scranton, Pennsylvania branch of the fictitious Dunder Mifflin Paper Company. The ninth season of "The Office" aired on Thursdays at 9:00 p.m. (Eastern) in the United States, as part of the Comedy Night Done Right television block. This is the second season not to star Steve Carell as lead character Michael Scott, although he returned for a cameo appearance in the series finale.
Document 8: The Office (U.S. season 7): The seventh season of the American television comedy "The Office" premiered on September 23, 2010 and concluded on May 19, 2011 on NBC. The season consisted of 26 half-hours of material, divided into 22 half-hour episodes and two hour-long episodes. The seventh season aired on Thursdays at 9:00 p.m. (ET) as part of Comedy Night Done Right. This was the last season to feature Michael Scott, played by Steve Carell, as the lead character. The seventh season was released on DVD and Blu-ray in region 1 on September 7, 2011.
Document 9: Product Recall: "Product Recall" is the twenty-first episode of the third season of the American comedy television series "The Office", and the show's forty-ninth 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, the company deals with the consequences of an offending watermark that appeared on several reams of paper. Michael Scott (Steve Carell) holds a poorly attended press conference, Jim Halpert (John Krasinski) and Andy Bernard (Ed Helms) head to a high school that printed their prom invitations on the paper to apologize, and Creed frames an employee at the paper mill to keep his job.
Document 10: Dwight's Speech: "Dwight's Speech" is the seventeenth episode of the second season of the American comedy television series "The Office", and the show's twenty-third episode overall. Written by Paul Lieberstein, and directed by Charles McDougall, the episode first aired in the United States on March 2, 2006 on NBC.
Document 11: Double Date (The Office): "Double Date" is the 9th episode of the sixth season of the U.S. comedy series "The Office" and the show's 109th episode overall. It was written by Charlie Grandy and directed by Seth Gordon. It originally aired on NBC on November 5, 2009.
Document 12: The Office (UK TV series): The Office is a British mockumentary sitcom, first broadcast in the United Kingdom on BBC Two on 9 July 2001. Created, written and directed by Ricky Gervais and Stephen Merchant, the programme is about the day-to-day lives of office employees in the Slough branch of the fictitious Wernham Hogg Paper Company. Gervais also stars in the series, playing the central character, David Brent.
Document 13: The Office (U.S. season 2): The second season of the American situation comedy television series, "The Office", premiered in the United States on NBC on September 20, 2005, and ended on May 11, 2006. The season had 22 episodes, including its first 40-minute "super-sized" episode. "The Office" is an American adaptation of the British TV series of the same name, and is presented in a mockumentary format, documenting the daily lives of office employees in the Scranton, Pennsylvania branch of the fictitious Dunder Mifflin Paper Company.
Document 14: The Office (U.S. season 8): The eighth season of the American television comedy "The Office" commenced airing on NBC in the United States on September 22, 2011, and concluded on May 10, 2012, consisting of 24 episodes. The series is an American adaptation of the British comedy series of the same name, and is presented in a mockumentary format, portraying the daily lives of office employees in the Scranton, Pennsylvania branch of the fictitious Dunder Mifflin Paper Company. The eighth season of "The Office" aired on Thursdays at 9:00 p.m. (Eastern) in the United States as part of the "Comedy Night Done Right" television block. This was the first season without Steve Carell as Michael Scott in the lead role and the only one to not feature the character in any capacity.
Document 15: The Office (U.S. TV series): The Office is an American television comedy series that aired on NBC from March 24, 2005, to May 16, 2013. It is an adaptation of the BBC series of the same name. "The Office" was adapted for American audiences by Greg Daniels, a veteran writer for "Saturday Night Live", "King of the Hill", and "The Simpsons". It is co-produced by Daniels' Deedle-Dee Productions, and Reveille Productions (later Shine America), in association with Universal Television. The original executive producers were Greg Daniels, Howard Klein, Ben Silverman, Ricky Gervais, and Stephen Merchant, with numerous others being promoted in later seasons.
ground_truth: BBC