Question: who sang it's too late to turn back now
[{'answer': 'Cornelius Brothers & Sister Rose', 'provenance': [{'wikipedia_id': '27043532', 'title': 'Too Late to Turn Back Now (song)', 'start_paragraph_id': 1, 'start_character': 60, 'end_paragraph_id': 1, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27043532', 'title': 'Too Late to Turn Back Now (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 206, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7854182251232808240}, 'section': 'Section::::Abstract.'}]}]