Question: On the network where the series that includes Known Unknowns was originally broadcast, how long ago were the speeches quoted from Burke from?

full_context: Document 1: 97 Seconds: "97 Seconds" is the third episode of the fourth season of "House" and the seventy-third episode overall. It aired on October 9, 2007.
Document 2: House (TV series): House (also called House, M.D.) is an American television medical drama that originally ran on the Fox network for eight seasons, from November 16, 2004 to May 21, 2012. The series' main character is Dr. Gregory House (Hugh Laurie), an unconventional, misanthropic medical genius who, despite his dependence on pain medication, leads a team of diagnosticians at the fictional Princeton -- Plainsboro Teaching Hospital (PPTH) in New Jersey. The series' premise originated with Paul Attanasio, while David Shore, who is credited as creator, was primarily responsible for the conception of the title character. The series' executive producers included Shore, Attanasio, Attanasio's business partner Katie Jacobs, and film director Bryan Singer. It was filmed largely in a neighborhood and business district in Los Angeles County's Westside called Century City.
Document 3: Edmund Burke: Louis XVI translated the Reflections "from end to end" into French. Fellow Whig MPs Richard Sheridan and Charles James Fox, disagreed with Burke and split with him. Fox thought the Reflections to be "in very bad taste" and "favouring Tory principles". Other Whigs such as the Duke of Portland and Earl Fitzwilliam privately agreed with Burke, but did not wish for a public breach with their Whig colleagues. Burke wrote on 29 November 1790: "I have received from the Duke of Portland, Lord Fitzwilliam, the Duke of Devonshire, Lord John Cavendish, Montagu (Frederick Montagu MP), and a long et cetera of the old Stamina of the Whiggs a most full approbation of the principles of that work and a kind indulgence to the execution". The Duke of Portland said in 1791 that when anyone criticised the Reflections to him, he informed them that he had recommended the book to his sons as containing the true Whig creed.
Document 4: List of House episodes: "House", also known as "House, M.D.", is an American medical drama series which premiered on Fox on November 16, 2004. "House" was created by David Shore. The show follows Dr. Gregory House (Hugh Laurie), an irascible, maverick medical genius who heads a team of diagnosticians at the fictional Princeton-Plainsboro Teaching Hospital (PPTH) in New Jersey. In a typical episode, the team is presented with an unusual case; the storyline follows the diagnosis of the patient's illness, a process often complicated by the internal competition and personal foibles of the diagnostic team. The team leader, House, frequently clashes with his boss (Dr. Lisa Cuddy (Lisa Edelstein) in seasons 1 through 7, and Dr. Eric Foreman in season 8), and his only friend, Dr. James Wilson (Robert Sean Leonard).
Document 5: Perils of Paranoia: "Perils of Paranoia" is the eighth episode of the eighth season of the American television medical drama series "House" and the 163rd overall episode of the series. It aired on Fox on November 28, 2011.
Document 6: Gregory House: Gregory House, M.D., commonly referred to by his surname House, is the title character of the American medical drama series House. Created by David Shore and portrayed by English actor Hugh Laurie, he leads a team of diagnosticians as the Head of Diagnostic Medicine at the fictional Princeton - Plainsboro Teaching Hospital in Princeton, New Jersey (based on the real - life Yale -- New Haven Hospital in New Haven, Connecticut).
Document 7: Edmund Burke: Burke knew that many members of the Whig Party did not share Fox's views and he wanted to provoke them into condemning the French Revolution. Burke wrote that he wanted to represent the whole Whig party "as tolerating, and by a toleration, countenancing those proceedings" so that he could "stimulate them to a public declaration of what every one of their acquaintance privately knows to be...their sentiments". Therefore, on 3 August 1791 Burke published his Appeal from the New to the Old Whigs, in which he renewed his criticism of the radical revolutionary programmes inspired by the French Revolution and attacked the Whigs who supported them, as holding principles contrary to those traditionally held by the Whig party.
Document 8: Abby Lockhart: At the end of the thirteenth season, Abby and Luka plan to honeymoon in Hawaii. However, the night before they are due to depart, Luka receives a phone call from Croatia informing him that his father is ill, so the honeymoon is put on hold until Luka can return from his urgent trip abroad. After Luka's departure, Abby has a tough time with the stern new ER Chief Kevin Moretti, who plans to mold the department into a more efficient and professional work environment, but Moretti quickly tells Abby he is very impressed with her work. Despite this, she seems to dislike him more than many of the other residents. In season 14, Abby is struggling to deal with Luka's absence, raise Joe and work at the ER; in ``Gravity '', Joe is injured after falling off a jungle gym at the playground and Abby ends up falling back into drinking at the episode's end. She approaches Dr. Janet Coburn (the O.B. Chief) who appears to have been her AA sponsor in the past. Abby's drinking problem continues to escalate, and she realizes how bad it is in`` Blackout'' when she shows up drunk to a party in honor of Pratt and Morris passing their boards. Abby finds herself waking up at 3am in Moretti's apartment realizing, after sobering up at the airport when trying to find a flight to Croatia to see Luka, that she slept with him.
Document 9: I Saw What I Saw: "I Saw What I Saw" is the sixth episode of the sixth season of the American television medical drama "Grey's Anatomy", and the show's 108th episode overall. It was written by Peter William Harper and directed by Allison Liddi-Brown. The episode was originally broadcast on the American Broadcasting Company (ABC) in the United States on October 22, 2009.
Document 10: Edmund Burke: At this point, Fox whispered that there was "no loss of friendship". "I regret to say there is", Burke replied, "I have indeed made a great sacrifice; I have done my duty though I have lost my friend. There is something in the detested French constitution that envenoms every thing it touches". This provoked a reply from Fox, yet he was unable to give his speech for some time since he was overcome with tears and emotion, he appealed to Burke to remember their inalienable friendship, but also repeated his criticisms of Burke and uttered "unusually bitter sarcasms". This only aggravated the rupture between the two men. Burke demonstrated his separation from the party on 5 June 1791 by writing to Fitzwilliam, declining money from him.
Document 11: Allison Cameron: Allison Cameron, M.D., is a fictional character on the Fox medical drama "House", portrayed by American actress Jennifer Morrison. An immunologist, Cameron was a member of Dr. Gregory House's team of handpicked specialists at Princeton-Plainsboro Teaching Hospital's Department of Diagnostic Medicine. She returned for the final episode of the series, "Everybody Dies".
Document 12: Edmund Burke: These events and the disagreements that arose from them within the Whig Party, led to its break-up and to the rupture of Burke's friendship with Fox. In debate in Parliament on Britain's relations with Russia, Fox praised the principles of the revolution, although Burke was not able to reply at this time as he was "overpowered by continued cries of question from his own side of the House". When Parliament was debating the Quebec Bill for a constitution for Canada, Fox praised the revolution and criticised some of Burke's arguments, such as hereditary power. On 6 May 1791, during another debate in Parliament on the Quebec Bill, Burke used the opportunity to answer Fox, and to condemn the new French Constitution and "the horrible consequences flowing from the French idea of the Rights of Man". Burke asserted that those ideas were the antithesis of both the British and the American constitutions. Burke was interrupted, and Fox intervened, saying that Burke should be allowed to carry on with his speech. A vote of censure was moved against Burke, however, for noticing the affairs of France, which was moved by Lord Sheffield and seconded by Fox. Pitt made a speech praising Burke, and Fox made a speech—both rebuking and complimenting Burke. He questioned the sincerity of Burke, who seemed to have forgotten the lessons he had learned from him, quoting from Burke's own speeches of fourteen and fifteen years before.
Document 13: Edmund Burke: In May 1778, Burke supported a parliamentary motion revising restrictions on Irish trade. His constituents, citizens of the great trading city of Bristol, however urged Burke to oppose free trade with Ireland. Burke resisted their protestations and said: "If, from this conduct, I shall forfeit their suffrages at an ensuing election, it will stand on record an example to future representatives of the Commons of England, that one man at least had dared to resist the desires of his constituents when his judgment assured him they were wrong".
Document 14: 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 15: 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.
ground_truth: fourteen and fifteen years
sub_queries: Of what series is Known Unknowns a part of? Answer: House
House >> original broadcaster Answer: Fox
Fox quoted Burke's speeches from how long ago? Answer: fourteen and fifteen years