Task: Question Generation
Input (English): The Nigerian film industry is known as Nollywood (a portmanteau of Nigeria and Hollywood) and is now the 2nd-largest producer of movies in the world. Nigerian film studios are based in Lagos, Kano and Enugu, forming a major portion of the local economy of these cities. Nigerian cinema is Africa's largest movie industry in terms of both value and the number of movies produced per year. Although Nigerian films have been produced since the 1960s, the country's film industry has been aided by the rise of affordable digital filming and editing technologies.
Output (English): When did the Nigerian film industry begin?