Question: When did the roof gardens above Denis Wright's birthplace open to the public?

full_context: Document 1: Neues Schauspielhaus: While the auditorium was destroyed in World War II, the facade as well as the cinema survived and in 1951 was renamed the Metropol. Since 1977 it has been used as a discothèque and became a famous music club during the 1980s heyday of West Berlin, frequented by bands like Depeche Mode, Morrissey, The Cross, The Human League and Front 242. For a short time in 2000 it was the location of the KitKatClub and in 2005 the architect Hans Kollhoff remodeled the interior as the "Goya" night club.
Document 2: Denis Wright (composer): Wright began working as a schoolteacher of modern languages in East Grinstead, and in 1925, he entered and won a competition to compose a brass band piece for use in the National Brass Band Championships. He continued to write occasional test pieces for the championships, and began teaching music at his old school, St George's. He was offered a job as an editor at the music publishers Chappell & Co. in 1930. In 1933, the BBC asked him to form a band section in the Music Department. At the outbreak of World War II, the BBC transferred Wright to Glasgow, during which time he undertook doctorate study in music at the University of Edinburgh.
Document 3: Wilfrid Wills: The son of a Director of Wills Tobacco, he was born at Bromley, Kent and educated at Cheltenham College and the Royal Military College, Sandhurst. He served in both World Wars: as an Officer in the 5th Dragoon Guards from 1916 to 1919; and as a Lieutenant-Commander in the Royal Naval Volunteer (Wireless) Reserve from 1939 to 1945.
Document 4: Arthur Fear: Born in Cwmcelyn, Blaina in 1902, he worked underground in the colliery until receiving a scholarship to the Royal Academy of Music in 1923, where he studied under Thomas Meux. While a student he attracted attention for his performances in Falstaff and as Hans Sachs in Meistersinger, his first professional role with the British National Opera Company, and one which became his hallmark. After leaving the Royal Academy in 1928, Fear joined the Royal Opera House at Covent Garden. He toured with the Covent Garden Opera Company all over the United Kingdom, later joining the Carl Rosa Opera Company.
Document 5: Leslie Wright (pianist): Leslie Wright received his first piano lessons at just six years old. In 1953 he joined the Music Academy of Santa Cecilia in Rome. He graduated in 1960, winning first prize and jury mention. In 1961 he participated in the International Piano Competition in Geneva, taking third place. In 1962 he made a tour of several South American countries appearing in their best theaters and concert halls. In 1963 he won first prize in the "Biernans" competition in Paris. Shortly afterwards he was honored in the global contest of Bilbao from among 44 virtuoso pianists worldwide. In 1965 he won a major prize in the International Piano Competition "Marguerite Long", in Paris.
Document 6: Department store: The design and function of department stores in Germany followed the lead of London, Paris and New York. Germany used to have a number of department stores; nowadays only a few of them remain. Next to some smaller, independent department stores these are Karstadt (in 2010 taken over by Nicolas Berggruen, also operating the KaDeWe in Berlin, the Alsterhaus in Hamburg and the Oberpollinger in Munich), GALERIA Kaufhof (part of the Metro AG). Others like Hertie, Wertheim and Horten AG were taken over by others and either fully integrated or later closed.
Document 7: Erik W. G. Leidzén: He was born into a Salvation Army family in Stockholm, Sweden on Easter Sunday, March 25, 1894. He took up the E-flat flugelhorn at age 6, and attended the Royal Swedish Academy of Music, graduating with honors in 1914. He emigrated to the United States in 1915, and continued his association with Salvation Army music there.
Document 8: Department store: All the major British cities had flourishing department stores by the mid-or late nineteenth century. Increasingly, women became the major shoppers and middle-class households. Kendals (formerly Kendal Milne & Faulkner) in Manchester lays claim to being one of the first department stores and is still known to many of its customers as Kendal's, despite its 2005 name change to House of Fraser. The Manchester institution dates back to 1836 but had been trading as Watts Bazaar since 1796. At its zenith the store had buildings on both sides of Deansgate linked by a subterranean passage "Kendals Arcade" and an art nouveau tiled food hall. The store was especially known for its emphasis on quality and style over low prices giving it the nickname "the Harrods of the North", although this was due in part to Harrods acquiring the store in 1919. Other large Manchester stores included Paulden's (currently Debenhams) and Lewis's (now a Primark).
Document 9: Department store: The middle up segment is mainly occupied by Metro Department Store originated from Singapore and Sogo from Japan. 2007 saw the re-opening of Jakarta's Seibu, poised to be the largest and second most upscale department store in Indonesia after Harvey Nichols, which the latter closed in 2010 and yet plans to return. Other international department stores include Debenhams and Marks & Spencer. Galeries Lafayette also joins the Indonesian market in 2013 inside Pacific Place Mall. This department store is targeting middle up market with price range from affordable to luxury, poised to be the largest upscale department store. Galeries Lafayette, Debenhams, Harvey Nichols, Marks & Spencer, Seibu and Sogo are all operated by PT. Mitra Adiperkasa.
Document 10: Rosemarie Wright: Wright studied at the Royal Academy of Music with Patrick Cory and Harold Craxton, winning many prizes including the Chappell Silver Medal and Tobias Matthay Fellowship. Her later studies were with Bruno Seidlhofer at the Staatsakademie in Vienna, and with Edwin Fischer and Wilhelm Kempff. She studied chamber music with the cellist Pablo Casals. Wright won the Haydn Prize in the International Haydn-Schubert Competition in Vienna in 1959, and in 1960 became the first British pianist ever to win the Bosendorfer Prize.
Document 11: Department store: All major cities have their distinctive local department stores, which anchored the downtown shopping district until the arrival of the malls in the 1960s. Washington, for example, after 1887 had Woodward & Lothrop and Garfinckel's starting in 1905. Garfield's went bankrupt in 1990, as did Woodward & Lothrop in 1994. Baltimore had four major department stores: Hutzler's was the prestige leader, followed by Hecht's, Hochschild's and Stewart's. They all operated branches in the suburbs, but all closed in the late twentieth century. By 2015, most locally owned department stores around the country had been consolidated into larger chains, or had closed down entirely.
Document 12: Department store: The iconic department stores of New Zealand's three major centres are Smith & Caughey's (founded 1880), in New Zealand's most populous city, Auckland; Kirkcaldie & Stains (founded 1863) in the capital, Wellington; and Ballantynes (founded 1854) in New Zealand's second biggest city, Christchurch. These offer high-end and luxury items. Additionally, Arthur Barnett (1903) operates in Dunedin. H & J Smith is a small chain operating throughout Southland with a large flagship store in Invercargill. Farmers is a mid-range national chain of stores (originally a mail-order firm known as Laidlaw Leeds founded in 1909). Historical department stores include DIC. Discount chains include The Warehouse, Kmart Australia, and the now-defunct DEKA.
Document 13: Denis Wright (composer): Wright was born in Kensington, London and moved to Wembley with his family at the age of five and attended St George's School, Harpenden. He began musical studies at the Royal College of Music, but interrupted his studies to serve in the British Army in Macedonia during World War I.
Document 14: Kensington Roof Gardens: The building housed the department store Derry and Toms until 1973, and then Biba until 1975. Since the 1980s the garden has been used as a restaurant and club.
Document 15: Plymouth: In 2004 the old Drake Circus shopping centre and Charles Cross car park were demolished and replaced by the latest Drake Circus Shopping Centre, which opened in October 2006. It received negative feedback before opening when David Mackay said it was already "ten years out of date". In contrast, the Theatre Royal's production and education centre, TR2, which was built on wasteland at Cattedown, was a runner-up for the RIBA Stirling Prize for Architecture in 2003.
ground_truth: 1980s
sub_queries: Denis Wright >> place of birth Answer: Kensington
when did the roof gardens above Kensington open to the public Answer: 1980s