Question: who said perfect is the enemy of good
[{'answer': 'Voltaire', 'provenance': [{'wikipedia_id': '26194519', 'title': 'Perfect is the enemy of good', 'start_paragraph_id': 1, 'start_character': 130, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]