Task: Question Generation
Input (English): La Diablada Carnival takes place in Oruro in central Bolivia. It is celebrated in honor of the miners' patron saint, Vírgen de Socavon (the Virgin of the Tunnels). Over 50 parade groups dance, sing and play music over a five kilometre-long course. Participants dress up as demons, devils, angels, Incas and Spanish conquistadors. Dances include caporales and tinkus. The parade runs from morning until late at night, 18 hours a day, 3 days before Ash Wednesday. It was declared the 2001 "Masterpieces of Oral Heritage and Intangible Heritage of Humanity" for UNESCO. Throughout the country celebrations are held involving traditional rhythms and water parties. In Santa Cruz de la Sierra, on the east side of the country, tropical weather allows a Brazilian-type Carnival, with Comparsas dancing traditional songs in matching uniforms.
Output (English): Over how many parade groups participate in the festivities?