Question: Who is the girl on friends and the television network originally airing the show containing Knight Fall?

full_context: Document 1: Knights Must Fall: Knights Must Fall is a 1949 Bugs Bunny cartoon directed by Friz Freleng that spoofs King Arthur. The title of the cartoon itself is a pun on the 1937 film "Night Must Fall".
Document 2: Known Unknowns: "Known Unknowns" is the seventh episode of the sixth season of "House" and 117th overall. It aired on November 9, 2009. The team tries to diagnose a teenage girl while House is away at a medical conference with Wilson and Cuddy. At the conference House finds something out about Cuddy.
Document 3: Cavuto on Business: Cavuto on Business is an American business analysis program, the second show of the "Cost of Freedom" business block, on Saturdays at 10:30am ET on the Fox News Channel. The show is hosted by Neil Cavuto.
Document 4: A Place to Call Home (season 6): The sixth and final season (also known as A Place to Call Home: The Final Chapter) of the Seven Network television series A Place to Call Home premiered on Showcase 19 August 2018. The series is produced by Chris Martin - Jones, and executive produced by Penny Win and Julie McGauran.
Document 5: Fox & Friends: Fox & Friends is a daily morning conservative news/talk program that airs on Fox News Channel, hosted by Steve Doocy, Ainsley Earhardt, and Brian Kilmeade.
Document 6: Knight Fall: "Knight Fall" is the eighteenth episode of the sixth season of the American medical drama "House" and it is the 127th episode overall. It aired on April 19, 2010 and was directed by Juan J. Campanella.
Document 7: American Idol: American Idol premiered in June 2002 and became the surprise summer hit show of 2002. The first show drew 9.9 million viewers, giving Fox the best viewing figure for the 8.30 pm spot in over a year. The audience steadily grew, and by finale night, the audience had averaged 23 million, with more than 40 million watching some part of that show. That episode was placed third amongst all age groups, but more importantly it led in the 18–49 demographic, the age group most valued by advertisers.
Document 8: Your World with Neil Cavuto: Your World with Neil Cavuto (written on-air as Your World Cavuto), which debuted as the "Cavuto Business Report" on the network's launch in 1996, is an American television news and business talk program on Fox News Channel currently hosted by Neil Cavuto. Episodes air live at 4 p.m. ET, Monday through Friday. The show focuses on the development of the markets and the day's events with interviews, current event updates, and analysis. The show has been a part of the Fox News program lineup since October 7, 1996, and is the number one cable news broadcast in its time slot.
Document 9: American Idol: In season ten, the total viewer numbers for the first week of shows fell 12–13%, and by up to 23% in the 18–49 demo compared to season nine. Later episodes, however, retained viewers better, and the season ended on a high with a significant increase in viewership for the finale – up 12% for the adults 18–49 demo and a 21% increase in total viewers from the season nine finale. While the overall viewer number has increased this season, its viewer demographics have continued to age year on year – the median age this season was 47.2 compared to a median age of 32.1 in its first season. By the time of the 2010–11 television season, Fox was in its seventh consecutive season of victory overall in the 18–49 demographic ratings in the United States.
Document 10: American Idol: The show pushed Fox to become the number one U.S. TV network amongst adults 18–49, the key demographic coveted by advertisers, for an unprecedented eight consecutive years by 2012. Its success also helped lift the ratings of other shows that were scheduled around it such as House and Bones, and Idol, for years, had become Fox's strongest platform primetime television program for promoting eventual hit shows of the 2010s (of the same network) such as Glee and New Girl. The show, its creator Simon Fuller claimed, "saved Fox".
Document 11: Batman: Knightfall: ``Knightfall ''is the title given to a major Batman story arc published by DC Comics that dominated Batman - related serial comic books in the spring and summer of 1993.`` Knightfall'' is also an umbrella title for the trilogy of storylines that ran from 1993 to 1994, consisting of ``Knightfall '',`` Knightquest'', and ``KnightsEnd ''. The story takes place over approximately six months. Bruce Wayne (Batman) suffers burnout and is systematically assaulted and crippled by a`` super steroid'' - enhanced genius named Bane. Wayne is replaced as Batman by an apprentice named Jean - Paul Valley (a.k.a. Azrael), who becomes increasingly violent and unstable, tarnishing Batman's reputation. Eventually, Wayne is healed through paranormal means, and reclaims his role as Batman.
Document 12: America Live with Megyn Kelly: America Live with Megyn Kelly was an American news program that aired on the Fox News Channel. The show aired from February 1, 2010 to late 2013, and was hosted by Megyn Kelly, former co-host of "America's Newsroom". It aired 1:003:00 PM Eastern Standard Time Monday through Friday.
Document 13: American Idol: Season eleven, however, suffered a steep drop in ratings, a drop attributed by some to the arrival of new shows such as The Voice and The X-Factor. The ratings for the first two episodes of season eleven fell 16–21% in overall viewer numbers and 24–27% in the 18/49 demo, while the season finale fell 27% in total viewer number and 30% in the 18-49 demo. The average viewership for the season fell below 20 million viewers the first time since 2003, a drop of 23% in total viewers and 30% in the 18/49 demo. For the first time in eight years, American Idol lost the leading position in both the total viewers number and the 18/49 demo, coming in second to NBC Sunday Night Football, although the strengths of Idol in its second year in the Wednesday-Thursday primetime slots helped Fox achieve the longest period of 18-49 demographic victory in the Nielsen ratings, standing at 8 straight years from 2004 to 2012.
Document 14: Fox & Friends: Fox & Friends is a daily morning conservative news / talk program that airs on Fox News Channel, hosted by Steve Doocy, Brian Kilmeade, and Ainsley Earhardt.
Document 15: American Idol: The enormous success of the show and the revenue it generated was transformative for Fox Broadcasting Company. American Idol and fellow competing shows Survivor and Who Wants to Be a Millionaire were altogether credited for expanding reality television programming in the United States in the 1990s and 2000s, and Idol became the most watched non-scripted primetime television series for almost a decade, from 2003 to 2012, breaking records on U.S. television (dominated by drama shows and sitcoms in the preceding decades).
ground_truth: Ainsley Earhardt
sub_queries: What series is Knight Fall a part of? Answer: House
What television network originally aired the show House ? Answer: Fox
who is the girl on Fox and friends Answer: Ainsley Earhardt