Question: In what festival held in Charleston, West Virginia could a clogging competition take place?

Context paragraphs:
Hideout Festival: Hideout Festival is an annual electronic music festival held in Zrce, Croatia on the island of Pag.  The first festival was in 2011, and landed on The Guardian's list of the best European festivals of 2011, and since then, has sold out every year to date.  The event is split between pool parties in the day and headline performances at night, both of which take place in Zrce's open-air venues along the beach.  There's also a number of boat parties that sail from Novalja port out onto the Adriatic In 2016, Hideout Festival took place from Sunday 26 June until Thursday 30 June.  It was the first year that BBC Radio 1 teamed up with the event for a 3-hour broadcast from a live pool party event hosted by Heidi, Monki and B Traits.In 2017 Hideout festival will take place from Monday 26th – Friday 30 June 2017.  5 days and nights, with over 150 artists including MK and Hannah Wants.

Charleston, West Virginia metropolitan area: The Charleston Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in West Virginia, anchored by the city of Charleston.  It is the largest metropolitan area entirely within the state of West Virginia.  While the Huntington Metro Area is more populous, it spans three states (West Virginia, Kentucky, and Ohio), and the core county of the Charleston area, Kanawha County, is more populous than the West Virginia portion of the Huntington area.

Tudor's Biscuit World: Tudor's Biscuit World is a restaurant chain based in Huntington, West Virginia, most commonly found in West Virginia.  Many West Virginia locations share a building with Gino's Pizza and Spaghetti, although the chain is more extensive than Gino's (which is exclusive to West Virginia), having locations in southern Ohio, eastern Kentucky, and southwestern Virginia.  In 2016 a franchise was opened in Panama City, Florida.  Tudor's serves biscuits, biscuit sandwiches, homestyle breakfasts and dinners, muffins, and several side dishes.  The chain was originally based in Charleston, West Virginia and many of the biscuit sandwiches are named for sports teams of interest in that area, including teams at Marshall University, West Virginia University, and The University of Charleston.

Bertie Ison Martin Conley: Bertie Ison Martin Conley (June 30, 1873 – October 29, 1939) was the wife of former Governor of West Virginia William G. Conley and served as that state's First Lady, 1929-1933.  She was born at Preston County, West Virginia.  In 1892, she married William G. Conley.  As first lady, she redecorated the West Virginia Governor's Mansion, adding outdoor gardens and artistic furnishings.  On her 59th birthday and 69th anniversary of West Virginia statehood, she and her husband dedicated the new West Virginia State Capitol.  After leaving office, the Conleys remained in Charleston, West Virginia, where she died at her home on Virginia Street.

Vandalia Gathering: The Vandalia Gathering is a popular festival devoted to old-time and bluegrass music, as well as related arts such as dance, quilt making, and cooking, which takes place each summer on the state capitol grounds in Charleston, West Virginia, United States.  It was established in 1977.  It is held on Memorial Day weekend in May.  The festival features solo competitions, whose winners are awarded cash prizes.

West Virginia University: West Virginia University (WVU) is a public, land-grant, space-grant, research-intensive university in Morgantown, West Virginia, United States.  Its other campuses include the West Virginia University Institute of Technology in Montgomery and Potomac State College of West Virginia University in Keyser; and a second clinical campus for the University's medical and dental schools at Charleston Area Medical Center in Charleston.  WVU Extension Service provides outreach with offices in all of West Virginia's 55 counties.  Since 2001, WVU has been governed by the West Virginia University Board of Governors.

2017 Aerobic Gymnastics European Championships: The 10th Aerobic Gymnastics European Championships take place in Ancona, Italy from September 22 to 24, 2017.  The competition take place at PalaRossini in Ancona.

Charleston Golden Eagles: The University of Charleston Golden Eagles are the athletic teams that represent the University of Charleston, located in Charleston, West Virginia, in NCAA Division II intercollegiate sports.  The Golden Eagles compete as members of the Mountain East Conference for all varsity sports except men's volleyball.  Charleston was a founding member of the Mountain East following the 2013 demise of the West Virginia Intercollegiate Athletic Conference, of which Charleston had been a member since 1924.  Prior to 1978, the university was called Morris Harvey College.  Charleston's main rivals are the West Virginia State University Yellow Jackets.

Clogging: Clogging is a type of folk dance in which the dancer's footwear is used percussively by striking the heel, the toe, or both against a floor or each other to create audible rhythms, usually to the downbeat with the heel keeping the rhythm.  The dance style has recently fused with others including African-American rhythms, and the Peruvian dance "zapateo" (which may in itself be derived from early European clog dances), resulting in the birth of newer street dances, such as tap, locking, jump, hakken, stomping, Gangsta Walking, and the Candy Walk dance.  The use of wooden-soled clogs is rarer in the more modern dances since clog shoes are not commonly worn in urban society, and other types of footwear have replaced them in their evolved dance forms.  Clogging is often considered the first form of street dance because it evolved in urban environments during the industrial revolution.

West Virginia State Capitol: The West Virginia State Capitol is the seat of government for the U.S. state of West Virginia, and houses the West Virginia Legislature and the office of the Governor of West Virginia.  Located in Charleston, West Virginia, the building was dedicated in 1932.  Along with the West Virginia Executive Mansion it is part of the West Virginia Capitol Complex, a historic district listed on the National Register of Historic Places.

Supporting paragraphs: Vandalia Gathering Clogging
Answer: Vandalia Gathering