Context: Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form., Please Sir! is a London Weekend Television situation comedy, created by John Esmonde and Bob Larbey and featuring actors John Alderton, Deryck Guyler, Joan Sanderson, Noel Howlett, Erik Chitty and Richard Davies. The series ran for 55 episodes between 1968 and 1972., A situation comedy, or sitcom, is a genre of comedy centered on a fixed set of characters who carry over from episode to episode. Sitcoms can be contrasted with sketch comedy where a troupe may use new characters in each sketch, and stand-up comedy where a comedian tells jokes and stories to an audience. Sitcoms originated in radio, but today are found mostly on television as one9 of its dominant narrative forms. This form can also include mockumentaries., London is the capital and most populous city of England and the United Kingdom, as well as the most populous city proper in the European Union. Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement for two millennia. It was founded by the Romans, who named it "Londinium". London's ancient core, the City of London, largely retains its medieval boundaries. Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent, and Hertfordshire, which today largely makes up Greater London, governed by the Mayor of London and the London Assembly., 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., EastEnders is a British soap opera; the first episode was broadcast in the United Kingdom on BBC One on 19 February 1985. "EastEnders" storylines examine the domestic and professional lives of the people who live and work in the fictional London Borough of Walford in the East End of London. The series primarily centres on the residents of Albert Square, a Victorian square of terraced houses, and its neighbouring streets, namely Bridge Street, Turpin Road and George Street. The area encompasses a pub, street market, night club, community centre, funeral parlour, café, wine bar, various other small businesses, a park and allotments., Broadcasting House is the headquarters of the BBC, in Portland Place and Langham Place, London. The first radio broadcast was made on 15 March 1932, and the building was officially opened two months later, on 15 May. The main building is in Art Deco style, with a facing of Portland stone over a steel frame. It is a Grade II* listed building and includes the BBC Radio Theatre, where music and speech programmes are recorded in front of a studio audience, and lobby that was used as a location for filming the 1998 BBC television series "In the Red"., Stand-up comedy is a comic style in which a comedian performs in front of a live audience, usually speaking directly to them. The performer is commonly known as a comic, stand-up comic, stand-up comedian, or simply a stand-up. In stand-up comedy, the comedian usually recites a grouping of humorous stories, jokes and one-liners typically called a monologue, routine, or act. Some stand-up comedians use props, music, or magic tricks to "enhance" their acts. Stand-up comedy is often performed in comedy clubs, bars and pubs, nightclubs, neo-burlesques, colleges and theatres. Outside of live performance, stand-up is often distributed commercially via television, DVD, CD and the internet., Brush Strokes is a British television sitcom , broadcast on BBC television from 1986 to 1991 . Written by Esmonde and Larbey and set in south London , it depicted the ( mostly ) amorous adventures of a wisecracking house painter , Jacko ( Karl Howman ) . There were 40 episodes spread over 5 series ., Sketch comedy comprises a series of short comedy scenes or vignettes, called "sketches", commonly between one and ten minutes long. Such sketches are performed by a group of comic actors or comedians, either on stage or through an audio or visual medium such as radio and television. Often sketches are first improvised by the actors and written down based on the outcome of these improv sessions; however, such improvisation is not necessarily involved in sketch comedy., Karl Howman (born 13 December 1953) is an English actor and voice-over artist. He is known for his role in the BBC television soap opera "EastEnders" as Buster Briggs which he played from 2014 to 2016., The British Broadcasting Corporation (BBC) is a British public service broadcaster. It is headquartered at Broadcasting House in London, is the world's oldest national broadcasting organisation, and is the largest broadcaster in the world by number of employees, with over 20,950 staff in total, of whom 16,672 are in public sector broadcasting; including part-time, flexible as well as fixed contract staff, the total number is 35,402., Ever Decreasing Circles is a British situation comedy which ran on BBC1 for four series from 1984 to 1989. 
It was written by John Esmonde and Bob Larbey, and it reunited them with Richard Briers, the star of their previous hit show, "The Good Life". It was much less brash than most situation comedies, and was more like a comedy-drama in places. This move into darker areas of comedy was continued with Briers's later series "If You See God, Tell Him"., John Gilbert Esmonde (21 March 1937  10 August 2008) and Robert Edward "Bob" Larbey (24 June 1934  31 March 2014), better known as "Esmonde and Larbey", were a successful British television comedy scriptwriting duo from the 1960s to the 1990s, creating popular sitcoms and hit comedy shows, such as "Please Sir!" (1968-72), "The Good Life" (1975-78), "Get Some In!" (1975-78), "Ever Decreasing Circles" (1984-89) and "Brush Strokes" (1986-91)., Subject: brush strokes, Relation: original_network, Options: (A) bbc (B) bbc one (C) bbc television (D) city (E) four (F) london weekend television (G) one (H) space (I) ten
Output: bbc one