Question: who played harmonica on bring it on home
[{'answer': 'Sonny Boy Williamson', 'provenance': [{'wikipedia_id': '3522313', 'title': 'Bring It On Home (Sonny Boy Williamson II song)', 'start_paragraph_id': 0, 'start_character': 18, 'end_paragraph_id': 0, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3522313', 'title': 'Bring It On Home (Sonny Boy Williamson II song)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 277, 'bleu_score': 0.6098231046778271, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16890972877649449899}, 'section': 'Section::::Recording and release.\n'}]}]