Information:  - BBC Television is a service of the British Broadcasting Corporation. The corporation has operated in the United Kingdom under the terms of a royal charter since 1927. It produced television programmes from its own studios since 1932, although the start of its regular service of television broadcasts is dated to 2 November 1936.  - Thomas Stewart "Tom" Baker (born 20 January 1934) is an English actor. He is known for his portrayal of the fourth incarnation of the Doctor in the science fiction series "Doctor Who" from 1974 to 1981, a longer tenure than any other actor, and for the narration of the comedy series "Little Britain". Baker's voice, which has been described as "sonorous", was voted the fourth most recognisable in the UK.  - Earth, otherwise known as the world, is the third planet from the Sun and the only object in the Universe known to harbor life. It is the densest planet in the Solar System and the largest of the four terrestrial planets.  - The TARDIS (Time And Relative Dimension In Space) is a fictional time machine and spacecraft that appears in the British science fiction television programme "Doctor Who" and its various spin-offs.  - The Time Lords are a fictional, ancient extraterrestrial people in the British science fiction television series "Doctor Who", of which the series' protagonist, the Doctor, is a member. Time Lords are so named for their command of time travel technology and their non-linear perception of time. Originally they were described as a powerful and wise race from the planet Gallifrey, from which the Doctor was a renegade; details beyond this were very limited for the first decade of the series. They later became integral to many episodes and stories as their role in the fictional universe developed. For the first eight years after the series resumed in 2005, the Time Lords were said to have been destroyed at some point between the original series' cancellation in 1989 and the show's revival during the fictional Last Great Time War. In 2013, the 50th anniversary special "The Day of the Doctor" concerned this supposed destruction and their eventual survival.  - Doctor Who is a British science-fiction television programme produced by the BBC since 1963. The programme depicts the adventures of a Time Lord called "The Doctor", an extraterrestrial being from the planet Gallifrey. He explores the universe in a time-travelling space ship called the TARDIS. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Accompanied by a number of companions, the Doctor combats a variety of foes, while working to save civilisations and help people in need.  - The Five Doctors is a special feature-length episode of the British science fiction television series "Doctor Who", produced in celebration of the programme's 20th anniversary. It had its world premiere in the United States, on the Chicago PBS station WTTW and various other PBS member stations on 23 November 1983, the anniversary date. It was transmitted in the United Kingdom two days later.  - K - 9 and Company was a proposed television spin - off of the original programme run of Doctor Who ( 1963 -- 1989 ) . It was to feature former series regulars Sarah Jane Smith , an investigative journalist played by Elisabeth Sladen , and K - 9 , a robotic dog . Both characters had been companions of the Fourth Doctor , but they had not appeared together before . A single episode , `` A Girl 's Best Friend '' , was produced as a pilot for a proposed programme , but was not taken up . `` A Girl 's Best Friend '' was broadcast by BBC1 as a Christmas special on 28 December 1981 . The story was released on DVD on 16 June 2008 as a double pack with K - 9 's first Doctor Who story `` The Invisible Enemy '' . Although a full series of K - 9 and Company was not produced , the two characters did re-appear two years later in The Five Doctors , an episode of Doctor Who broadcast in 1983 celebrating the show 's twentieth anniversary . Following the successful revival of Doctor Who in 2005 , Sarah Jane Smith and K - 9 would be re-introduced to the show in the second series episode `` School Reunion '' , which aired in 2006 . In addition to subsequent appearances by both characters in the main programme , this became the basis for another series featuring the two characters , The Sarah Jane Adventures , which debuted in 2007 . K - 9 appears only occasionally in the first and second series , and becomes a regular character in series three . Another unrelated programme , not produced by the BBC and without Sarah Jane , K - 9 , began airing in 2010 . This series , created by one of the originators of the K - 9 character , features a different version of the robot dog .  - The Sarah Jane Adventures is a British science fiction television programme, that was produced by BBC Cymru Wales for CBBC, created by Russell T Davies starring Elisabeth Sladen. The programme is a spin-off of the long-running BBC science fiction programme "Doctor Who" and is aimed at a younger audience than "Doctor Who". It focuses on the adventures of Sarah Jane Smith, an investigative journalist who, as a young woman, had numerous adventures across time and space.  - John Devon Roland "Jon" Pertwee (7 July 1919  20 May 1996) was an English actor, entertainer and cabaret performer.  - A television program is a segment of content intended for broadcast on over-the-air, cable television, or Internet television, other than a commercial, trailer, or any other segment of content not serving as attraction for viewership. It may be a single production, or more commonly, a series of related productions (also called a television series or a television show).  - Elisabeth Clara Heath-Sladen (1 February 1946  19 April 2011) was an English actress best known for her role as Sarah Jane Smith in the British television series "Doctor Who". She was a regular cast member from 1973 to 1976, alongside both Jon Pertwee and Tom Baker, and reprised the role many times in subsequent decades, both on "Doctor Who" and its spin-offs, "K-9 and Company" and "The Sarah Jane Adventures".  - The alien invasion is a usual part of science fiction stories and film, in which extraterrestrials invade Earth either to exterminate and supplant human life, enslave it under a colonial system, to harvest humans for food, steal the planet's resources, or destroy the planet altogether.  - Sarah Jane Smith is a fictional character played by Elisabeth Sladen in the long-running BBC Television science fiction series "Doctor Who" and two of its spin-offs. In the fictional universe of "Doctor Who" and its spin-offs, Sarah Jane is a dogged investigative journalist who first encounters alien time traveller the Doctor while trying to break a story on a top secret research facility, and subsequently becomes his travelling companion on a series of adventures spanning the breadth of space and time. After travelling with the Doctor in four seasons of the show they suddenly part ways, and after this she continues to investigate strange goings-on back on Earth. Over time, Sarah Jane establishes herself as a committed defender of Earth from alien invasions and other threats, occasionally reuniting with the Doctor in the course of her own adventures, all the while continuing to work as a freelance investigative journalist.  - The Fourth Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by Tom Baker for seven consecutive seasons and remains the longest-lived incarnation of the Doctor in the show's on-screen history, counting both the classic and modern series. Further to this, he is considered to be the most recognisable and iconic incarnation of the Doctor both in the United Kingdom and internationally.  - Gallifrey (or ) is a planet in the long-running British science fiction television series "Doctor Who". It is the original home world of the Doctor, The Master, and The Rani, as well as other Time Lords that have been seen in the show. It was located in a binary star system within the constellation of Kasterborous, at "galactic coordinates ten-zero-eleven-zero-zero by zero-two from galactic zero centre".  - A police box, used in the United Kingdom throughout the 20th century, is a public telephone kiosk or callbox for the use of members of the police, or for members of the public to contact the police. Unlike an ordinary callbox, its telephone was located behind a hinged door so it could be used from the outside, and the interior of the box was, in effect, a miniature police station for use by police officers to read and fill in reports, take meal breaks and even temporarily hold prisoners until the arrival of transport.  - WTTW, virtual channel 11 (UHF digital channel 47), is a PBS member television station and the primary PBS member station located in Chicago, Illinois, United States. The station is owned by not-for-profit broadcasting entity Window to the World Communications, Inc., and is sister to classical music radio station WFMT (98.7 FM). The two stations share studio facilities located at the Renée Crown Public Media Center on North Saint Louis Avenue (adjacent to Northeastern Illinois University) in the city's North Park neighborhood; WTTW maintains transmitter facilities located atop the Willis Tower on South Wacker Drive in the Chicago Loop. It also owns and operates The Chicago Production Center, a video production and editing facility that is operated alongside the two stations.    What entity does 'k-9 and company' has the relation 'genre' with?
The answer to this question is:
science fiction