Question: who played harmonica on there must be an angel
[{'answer': 'Stevie Wonder', 'provenance': [{'wikipedia_id': '5961474', 'title': 'There Must Be an Angel (Playing with My Heart)', 'start_paragraph_id': 1, 'start_character': 261, 'end_paragraph_id': 1, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5961474', 'title': 'There Must Be an Angel (Playing with My Heart)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 428, 'bleu_score': 0.972782728923768, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2509415464159146238}, 'section': 'Section::::Abstract.'}]}]