Question: who made the law of conservation of energy
[{'answer': 'Émilie du Châtelet', 'provenance': [{'wikipedia_id': '67088', 'title': 'Conservation of energy', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '67088', 'title': 'Conservation of energy', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 1334, 'bleu_score': 0.8603600155551311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17605040075754555120}, 'section': 'Section::::History.\n'}]}]