Question: who sings oh black water keep on rolling
[{'answer': 'The Doobie Brothers', 'provenance': [{'wikipedia_id': '3408529', 'title': 'Black Water (song)', 'start_paragraph_id': 1, 'start_character': 61, 'end_paragraph_id': 1, 'end_character': 80, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3408529', 'title': 'Black Water (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 292, 'bleu_score': 0.8459689812088771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17804057148010271357}, 'section': 'Section::::Abstract.'}]}]