Question: who wrote the music for finian's rainbow
[{'answer': 'Burton Lane', 'provenance': [{'wikipedia_id': '599996', 'title': "Finian's Rainbow", 'start_paragraph_id': 1, 'start_character': 106, 'end_paragraph_id': 1, 'end_character': 117, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '599996', 'title': "Finian's Rainbow", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 285, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10913684892451579466}, 'section': 'Section::::Abstract.'}]}]