paragraph_text: WFPK is a 24-hour listener-supported, noncommercial radio station in Louisville, Kentucky, United States, broadcasting at 91.9 MHz FM with an adult album alternative format. The station plays national and local alternative music as well as jazz all day on Sunday. It is owned by Louisville Public Media.

paragraph_text: After a series of test transmissions and special broadcasts that began in August, regular BBC television broadcasts officially resumed on 1 October 1936, from a converted wing of Alexandra Palace in London, which housed two studios, various scenery stores, make-up areas, dressing rooms, offices, and the transmitter itself, now broadcasting on the VHF band. BBC television initially used two systems, on alternate weeks: the 240-line Baird intermediate film system and the 405-line Marconi-EMI system, each making the BBC the world's first regular high-definition television service, broadcasting Monday to Saturday from 15:00 to 16:00 and 21:00 to 22:00.

paragraph_text: The Broadcasting Act (long title: "An Act respecting broadcasting and to amend certain Acts in relation thereto and in relation to radiocommunication") is an Act of the Parliament of Canada regarding broadcasting of radiocommunications.

paragraph_text: ``Let It Be ''is a song by the English rock band the Beatles, released in March 1970 as a single, and (in an alternate mix) as the title track of their album Let It Be. At the time, it had the highest debut on the Billboard Hot 100, beginning its chart run at number 6. It was written and sung by Paul McCartney. It was their final single before McCartney announced his departure from the band. Both the Let It Be album and the US single`` The Long and Winding Road'' were released after McCartney's announced departure from and the subsequent break - up of the group. The alternate mix on their album Let It Be features an additional guitar solo and some minor differences in the orchestral sections.

paragraph_text: Based on the work of Atwater, it became common practice to calculate energy content of foods using 4 kcal / g for carbohydrates and proteins and 9 kcal / g for lipids. The system was later improved by Annabel Merrill and Bernice Watt of the USDA, who derived a system whereby specific calorie conversion factors for different foods were proposed. This takes cognizance of the fact that first the gross energy values of the protein, fats and carbohydrates from different food sources are different, and second, that the apparent digestibility of the components of different foods is different.

paragraph_text: Evangelische Omroep (EO, English: "Evangelical Broadcasting") is one of the twelve member-based broadcasting associations contributing to the Netherlands Public Broadcasting system. It has as its mission to bring people into contact with Jesus Christ and its statement of faith is a form of Evangelicalism. EO is one of the few broadcasting associations in the "pillarized" Dutch broadcasting system to have remained totally faithful to its religious roots. For a long time every one of its programmes made reference to God and to the Christian religion, although this is less often the case in the 21st century.

paragraph_text: Qado or lunch is often elaborate. Varieties of bariis (rice), the most popular probably being basmati, usually serve as the main dish. Spices like cumin, cardamom, cloves, cinnamon, and garden sage are used to aromatize these different rice delicacies. Somalis eat dinner as late as 9 pm. During Ramadan, supper is often served after Tarawih prayers; sometimes as late as 11 pm.

paragraph_text: The Nippon Hōsō Kyōkai (NHK, the Japan Broadcasting Corporation) began conducting research to "unlock the fundamental mechanism of video and sound interactions with the five human senses" in 1964, after the Tokyo Olympics. NHK set out to create an HDTV system that ended up scoring much higher in subjective tests than NTSC's previously dubbed "HDTV". This new system, NHK Color, created in 1972, included 1125 lines, a 5:3 aspect ratio and 60 Hz refresh rate. The Society of Motion Picture and Television Engineers (SMPTE), headed by Charles Ginsburg, became the testing and study authority for HDTV technology in the international theater. SMPTE would test HDTV systems from different companies from every conceivable perspective, but the problem of combining the different formats plagued the technology for many years.

paragraph_text: The differences between fungi and other organisms regarded as plants had long been recognised by some; Haeckel had moved the fungi out of Plantae into Protista after his original classification, but was largely ignored in this separation by scientists of his time. Robert Whittaker recognized an additional kingdom for the Fungi. The resulting five - kingdom system, proposed in 1969 by Whittaker, has become a popular standard and with some refinement is still used in many works and forms the basis for new multi-kingdom systems. It is based mainly upon differences in nutrition; his Plantae were mostly multicellular autotrophs, his Animalia multicellular heterotrophs, and his Fungi multicellular saprotrophs. The remaining two kingdoms, Protista and Monera, included unicellular and simple cellular colonies. The five kingdom system may be combined with the two empire system:

paragraph_text: Baird Television Ltd. made Britain's first television broadcast, on 30 September 1929 from its studio in Long Acre, London, via the BBC's London transmitter, using the electromechanical system pioneered by John Logie Baird. This system used a vertically-scanned image of 30 lines – just enough resolution for a close-up of one person, and with a bandwidth low enough to use existing radio transmitters. Simultaneous transmission of sound and picture was achieved on 30 March 1930, by using the BBC's new twin transmitter at Brookmans Park. By late 1930, 30 minutes of morning programmes were broadcast Monday to Friday, and 30 minutes at midnight on Tuesdays and Fridays, after BBC radio went off the air. Baird broadcasts via the BBC continued until June 1932.

paragraph_text: After a series of test transmissions and special broadcasts that began in August 1936, the BBC Television Service officially launched on 2 November 1936 from a converted wing of Alexandra Palace in London. ``Ally Pally ''housed two studios, various scenery stores, make - up areas, dressing rooms, offices, and the transmitter itself, which then broadcast on the VHF band. BBC television initially used two systems on alternate weeks: the 240 - line Baird intermediate film system and the 405 - line Marconi - EMI system. The use of both formats made the BBC's service the world's first regular high - definition television service; it broadcast from Monday to Saturday between 15: 00 and 16: 00, and 21: 00 and 22: 00. The first programme broadcast -- and thus the first ever, on a dedicated TV channel -- was`` Opening of the BBC Television Service'' at 15: 00. The first major outside broadcast was the coronation of King George VI and Queen Elizabeth in May 1937.

paragraph_text: CKKQ-FM, known as 100.3 The Q or The Q, is a broadcast radio station in Victoria, British Columbia, Canada. CKKQ broadcasts online and at a frequency of 100.3 MHz on the FM band. The station has broadcast a mainstream rock format since its inception, but has a more classic rock sound since 2001, when sister station CKXM-AM/FM became The Zone @ 91.3 with the CJZN calls and an alternative rock format. It used to have an adult album alternative lean up until Pattison took over the station from OK Radio.

paragraph_text: Toughest Place To Be A... is a BBC Two television documentary which offered various working or retired professionals in the United Kingdom a different and more challenging working environment in the same profession they worked in. These individuals travel to a foreign country to learn and work under the new environment for ten days. First broadcast in February 2011, a total of fifteen episodes were produced since. In the United States the programme is aired on Al Jazeera America.

paragraph_text: He has made various documentaries among which "When Italy was not a poor country", about Italy in the 1960s narrated by Joris Ivens, and "Scusi, dov'è il Nord Est?" produced by Fandango and On Line Productions for Arte (broadcast as "Succes à l'italienne") and broadcast in Italy by Tele+. In 2005 he directed "Il Ponte", a fiction short-movie, screenplayed by Francesco Tullio Altan, starring Carlo Mazzacurati and Valentina Fago. His last work, Che Guevara - The body and the legend (2007), was broadcast in 12 different countries. He works and lives in Paris.

paragraph_text: De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres) is the seminal work on the heliocentric theory of the Renaissance astronomer Nicolaus Copernicus (1473 -- 1543). The book, first printed in 1543 in Nuremberg, Holy Roman Empire, offered an alternative model of the universe to Ptolemy's geocentric system, which had been widely accepted since ancient times.

paragraph_text: Publishers from different factions of the Latter Day Saint movement have published different chapter and verse notation systems. The two most significant are the LDS system, introduced in 1879, and the RLDS system, which is based on the original 1830 chapter divisions.

paragraph_text: The book was originally published with the title "The Naked Lunch" in Paris in July 1959 by Olympia Press. Because of US obscenity laws, a complete American edition (by Grove Press) did not follow until 1962. It was titled "Naked Lunch" and was substantially different from the Olympia Press edition because it was based on an earlier 1958 manuscript in Allen Ginsberg's possession. The article "the" in the title was never intended by the author, but added by the editors of the Olympia Press 1959 edition. Nonetheless "The Naked Lunch" remained the title used for the 1968 and 1974 Corgi Books editions, and the novel is often known by the alternative name, especially in the UK where these editions circulated.

paragraph_text: Working Lunch is a television programme broadcast on BBC Two which covers business, personal finance and consumer news, broadcast between 1994 and 2010. The programme was first aired on 19 September 1994. It had a quirky, relaxed style, especially when compared to other BBC business shows such as "World Business Report". In April 2010, the BBC announced that the programme was being cancelled at the end of July 2010. "GMT" with George Alagiah took its place in the schedule at 12:30 on BBC Two.

paragraph_text: While considered "alternative" today, most alternative systems have existed since ancient times. After the public school system was widely developed beginning in the 19th century, some parents found reasons to be discontented with the new system. Alternative education developed in part as a reaction to perceived limitations and failings of traditional education. A broad range of educational approaches emerged, including alternative schools, self learning, homeschooling and unschooling. Example alternative schools include Montessori schools, Waldorf schools (or Steiner schools), Friends schools, Sands School, Summerhill School, The Peepal Grove School, Sudbury Valley School, Krishnamurti schools, and open classroom schools. Charter schools are another example of alternative education, which have in the recent years grown in numbers in the US and gained greater importance in its public education system.

paragraph_text: The two systems were to run on a trial basis for six months; early television sets supported both resolutions. However, the Baird system, which used a mechanical camera for filmed programming and Farnsworth image dissector cameras for live programming, proved too cumbersome and visually inferior, and ended with closedown (at 22:00) on Saturday 13 February 1937.

Question: For how long did the Working Lunch producer alternate different broadcasting systems?
Answer: six months