Question: who sings box of rain on american beauty
[{'answer': 'Phil Lesh', 'provenance': [{'wikipedia_id': '3926430', 'title': 'Box of Rain', 'start_paragraph_id': 1, 'start_character': 120, 'end_paragraph_id': 1, 'end_character': 129, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3926430', 'title': 'Box of Rain', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 275, 'bleu_score': 0.96188712955549, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3919914547312105634}, 'section': 'Section::::Abstract.'}]}]