Question: who wrote i've looked at life from both sides now
[{'answer': 'Joni Mitchell', 'provenance': [{'wikipedia_id': '6572508', 'title': 'Both Sides, Now', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]