Question: String Quartet No. 14 is the one of a series of seventeen works in the medium by which Brazilian composer, written in 1953, who was described as "the single most significant creative figure in 20th-century Brazilian art music"?
{'answer': 'Heitor Villa-Lobos', 'supporting_facts': [['String Quartet No. 14 (Villa-Lobos)', 0], ['Heitor Villa-Lobos', 0]]}