Question: who is the childhood prodigy who mastered the mandolin
[{'answer': 'Srinivas', 'provenance': [{'wikipedia_id': '604259', 'title': 'U. Srinivas', 'start_paragraph_id': 0, 'start_character': 3, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '604259', 'title': 'U. Srinivas', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1425, 'bleu_score': 0.991360488753344, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7307624172582375724}, 'section': 'Section::::Early life and background.\n'}]}]