Question: BD Performing Arts is the corporate entity that manages several performance groups for young people in Concord, the largest city in Contra Costa County, California, founded in which year?

full_context: Document 1: BD Performing Arts: BD Performing Arts is the corporate entity that manages several performance groups for young people in Concord, California. Included in these groups are the three Blue Devils Drum & Bugle Corps, designated "A", "B", and "C"; the Blue Devils International Corps; the Blue Devils Open Class, A Class, and Special Needs Winter Guards; the Diablo Wind Symphony; and BD Entertainment.
Document 2: KJSCE Symphony: Symphony, the annual cultural festival of K. J. Somaiya College of Engineering, has created its name and popularity among Engineering and Management institutes far and wide for the last decade. Every year many students from various institutes be a part of this festival. The main aim is to promote, encourage and exhibit the talents of the students on a common platform and create interest in the classical, vocal and instrumental music. Symphony hosts more than 9000 students every year. Symphony has been graced by artists of the magnitude of Pt. Hariprasad Chaurasia, Pt ShivKumar Sharma, Louis Banks, Hariharan, Indus Creed, Parikrama, KK, Bombay Vikings, Taufiq Qureshi, Dagar, Suraj Jagan, and Ustad Zakir Hussain. The event also has a social touch to propagate a message relevant to the times like AIDS awareness, etc. There have also been Auto Shows and an Army display at Symphony. The organization is done by students which is also a time for building strong camaraderie and teamwork. Many students look back fondly at the memories gathered during this phase of their lives.
Document 3: Contra Costa Centre, California: Contra Costa Centre is a census-designated place in Contra Costa County, California. Contra Costa Centre sits at an elevation of 92 feet (28 m). The 2010 United States census reported Contra Costa Centre's population was 5,364. Contra Costa Centre is served by the Pleasant Hill / Contra Costa Centre BART station.
Document 4: Concord, California: Concord ( ) is the largest city in Contra Costa County, California. At the 2010 census, the city had a population of 122,067 making it the 8th largest city in the San Francisco Bay Area. Founded in 1869 as the community of Todos Santos by Salvio Pacheco, the name was changed to Concord within months. The city is a major regional suburban East Bay center within the San Francisco Bay Area, and is 29 mi east of San Francisco.
Document 5: Concord Bicycle Music: Concord Music is a wholly owned independent music company based in Beverly Hills, California, with worldwide (including the U.S) distribution through Universal Music Group. The company is specialized in recordings (Concord Records, Fantasy Records, Loma Vista Recordings) and music publishing (The Bicycle Music Company, Imagem). As of September 2017, Concord is the fifth-largest music company in the world.
Document 6: Shen Yun Performing Arts: Shen Yun Performing Arts is a performing-arts and entertainment company formed in New York City. It performs classical Chinese dance, ethnic and folk dance, and story-based dance, with orchestral accompaniment and solo performers. The Shen Yun website translates the phrase "shen yun" as "the beauty of divine beings dancing".
Document 7: Northamptonshire Music and Performing Arts Trust: Northamptonshire, England, has a music and performing arts service to provide instrumental music lessons in local schools. Its services are available to around 13,000 school children. In July the music service was given an Outstanding level through MSEP evaluation. The service supports fifteen Saturday morning music centres and many music and drama groups, all within Northamptonshire. Membership of the county level groups is determined by an annual audition process in July. For most groups there are three levels: Junior, Training and Youth which are usually abbreviated by staff and students, e.g. County Junior Wind Orchestra (CJWO), County Training Strings (CTS) and County Youth Orchestra (CYO).
Document 8: San Ramon, California: San Ramon is a city in Contra Costa County, California, United States, located 15 miles east of San Francisco, and within the San Ramon Valley. San Ramon's population was estimated as 76,134 in mid-2015 by the US Census Bureau, making it the 4th largest city in Contra Costa County, behind Richmond, Concord and Antioch.
Document 9: Bay Point, California: Bay Point, formerly West Pittsburg, is a census-designated place located in the East Bay region of the San Francisco Bay Area in Contra Costa County, California. Bay Point is just west of Pittsburg, California, and northeast of Concord, California, on the southern shore of Suisun Bay. The population of Bay Point was 21,349 as of 2010. The Pittsburg-Bay Point terminal of the Bay Area Rapid Transit (BART) rail system is located adjacent to Bay Point in Pittsburg. The community is traversed by a freeway, State Route 4, the California Delta Highway. Being unincorporated, Bay Point does not have its own police department. The community is policed by the California Highway Patrol and the Contra Costa County Sheriff's Office. The ZIP code is 94565, and the area code is 925.
Document 10: Boston Crusaders Senior Drum and Bugle Corps: The Crusaders Senior Drum and Bugle Corps of Boston is an alumni drum and bugle corps from Boston, Massachusetts founded in 1991. It is a not-for-profit, music organization with members ranging in age from 23-73. They march in parades and shows and concerts in 6 different states. The Senior corps also works very closely with the junior corps, with many of the alumni volunteering to help their younger counterparts thrive both on and off the field. The corps has a color guard with a full American Section, who use rifles, sabers, as well as flags. The drum line contains 5 base drum players, 4 tenors, 7 snare players, and 3 cymbal players. There are approximately 50 members in the Horn Line. Though many alumni corps will only allow former junior corps members to march with them, the Crusader Seniors corps consists of members from dozens of former drum corps and bands.
Document 11: Contra Costa Water District: The Contra Costa Water District (CCWD) is an agency that was created in 1936 to supply water for consumers in eastern Contra Costa, California. It is now one of the largest water districts in California, serving about 500,000 people in Central and Eastern Contra Costa County.
Document 12: Vivace Youth Chorus of San Jose: The Vivace Youth Chorus of San Jose is a choral program for children from ages four to eighteen. Youth from throughout the Silicon Valley participate in six program levels. The chorus offers a well-rounded program that balances vocal training, music theory, and performances. Upper choir levels take part in choral festivals and tours. Choristers gain exposure to various musical genres, from traditional folk to classical, jazz, and contemporary. The chorus collaborates with area composers and musicians, as well as with other ensembles, including Opera San Jose and San Jose Symphonic Choir.
Document 13: County Connection: The County Connection (officially, the Central Contra Costa Transit Authority, CCCTA) is a Concord-based public transit agency operating fixed-route bus and ADA paratransit (County Connection LINK) service in and around central Contra Costa County in the San Francisco Bay Area. Established in 1980 as a joint powers authority, CCCTA assumed control of public bus service within central Contra Costa first begun by Oakland-based AC Transit as it expanded into suburban Contra Costa County in the mid-1970s (especially after the opening of BART).
Document 14: El Cerrito, California: El Cerrito is a city in Contra Costa County, California, United States, and forms part of the San Francisco Bay Area. It has a population of 23,549 according to the 2010 census. El Cerrito was founded by refugees from the 1906 San Francisco earthquake. It was incorporated in 1917 as a village with 1500 residents. As of the census in 2000, there were 23,171 people, 10,208 households and 5971 families in the city. The top 20 employers in the city, according to the 2013 Comprehensive Annual Financial Report, include such entities as the West Contra Costa Unified School District, City of El Cerrito, Lucky Stores, Pastime ACE Hardware, and Honda of El Cerrito.
Document 15: Dance in California: California is rich in dance history. In classical ballet, California is home to the oldest professional ballet company in the United States. The San Francisco Ballet, founded as the San Francisco Opera Ballet in 1933, predates both American Ballet Theater and New York City ballet. Barbara Crockett founded the Sacramento Ballet in 1954 and hosted the first festival for the Pacific Western Region of Regional Dance America in 1966. In modern dance, Ruth St. Denis established her second school in the Hollywood area of Los Angeles in 1940 while Lester Horton created the Horton Dance Group in 1934, also in Los Angeles. Ann Halprin founded the San Francisco Dancers’ Workshop in 1950 and continues to live and work in the San Francisco Bay Area. The Bay Area in also home to Alonzo King's Lines Ballet and Oberlin Dance Collective.
ground_truth: 1869