Question: What type of event is held in Santo Domingo every year and is given by Presidente, a brand of Pilsner beer?  
Context: Presidente is a brand of Pilsner beer that is owned and produced by Cervecería Nacional Dominicana (CND) at several breweries in the Dominican Republic.  In addition to domestic consumption in the Dominican Republic, Presidente is exported to the United States, Panama, Honduras, Spain, Germany, Switzerland, Italy, Andorra, Aruba, Cuba, Curaçao, Antigua, Belize, Martinique, Guadeloupe, Turks and Caicos, The Bahamas, Saint Martin, British Virgin Islands and Puerto Rico. The Festival Presidente ("Presidente" Festival) previously known as Festival Presidente de Música Latina, is a music festival arranged by Presidente celebrated every two years for three days in October in the Estadio Olímpico Félix Sánchez of Santo Domingo, Dominican Republic. Girar is the first studio album released by the Dominican based electronic rock band Tabu Tek.  This first production was released on the year 1996 in Santo Domingo, Dominican Republic.  The released spanned several hits in the local rock scene of Santo Domingo including the songs "Cierra Los Ojos" , "Escena Gastada", and "Girar" who all received significant airplay in local rock stations like "X-102" and "95.7 Nota Diferente".  Despite this local success, the band enjoyed little recognition outside Santo Domingo, even less outside the Dominican Republic.  Led by Maximo Martinez, the success of this album led the band to produce two more albums. The Banco León (Léon Bank) was formally introduced at a ceremony attended by former Dominican President Hipólito Mejía on December 2, 2003.  The bank represents a union between the Banco Profesional and Banco Nacional de Credito (Bancredito).  The Léon Jimenes family, which controls the León Jimenez Group, Ltd is better known for its Marlboro cigarettes, Aurora cigars and Presidente beer operations.  The current president of the bank is Mr. Carlos Guillermo León, and its corporate headquarters are in Santo Domingo, Dominican Republic. Barbarella is an annual music festival held in Santo Domingo, Dominican Republic since 2011 by Presidente. Universidad Católica Santo Domingo (La Católica) – UCSD (Santo Domingo Catholic University) is a private Catholic university located in the archdiocese of Santo Domingo, in the Dominican Republic.  The university was established in 1982, with 65 students entering the school in the following year. The field hockey tournament at the 2003 Pan American Games was held in the Santo Domingo Stadium, Santo Domingo, Dominican Republic from August 1–17, 2003.  It served as a qualification tournament for the 2004 Summer Olympics in Athens, Greece.  First place received a ticket for the Olympic tournament.  The men competed for the tenth time at the Pan Americans, the women for the fifth time. The Reales Atarazanas (Royal Shipyards) is a waterside complex that housed the shipyards, warehouses, customs house and tax offices of the old port of Santo Domingo, Dominican Republic.  It was the property of the Spanish Crown.  Begun in 1509, the Atarazanas are the oldest building of its type still standing in America, and one of a handful remaining in the Spanish world, amongst which are the Atarazanas Reales de Barcelona, in Barcelona, the Atarazanas Reales de Sevilla, in Seville and the Atarazanas del Grao in Valencia.  They form part of Colonial Zone of Santo Domingo World Heritage Site, and today house the "Museo de las Atarazanas", which exhibits artifacts recovered from underwater archeology. The Santo Domingo Open or Dominican Republic International or Santo Domnigo International is an open badminton tournament held in Santo Domingo, Dominican Republic.  The tournament has been an International Series level since 2003, but in 2013 categorized as a Future Series level from Badminton World Federation. Grupo León Jimenes, C. por A., is one of the largest companies in the Dominican Republic with annual revenue of approximately $600 million and is headquartered in Santo Domingo.  This corporation enjoys virtual monopolies in two local markets—beer and cigarettes—as well as having banking and printing operations.  It brews "Presidente", "Bohemia", "Miller" and "Heineken" beers, and makes "Marlboro" cigarettes.  It is also the parent company of La Aurora S.A., the maker of "Aurora" and "León Jimenes" cigars.  The executive vice-president of La Aurora S.A. is Guillermo León Herbert.
Answer: an annual music festival