Question: who said matter was made of fire earth air and water
[{'answer': 'Empedocles', 'provenance': [{'wikipedia_id': '9553', 'title': 'Empedocles', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9553', 'title': 'Empedocles', 'start_paragraph_id': 35, 'start_character': 0, 'end_paragraph_id': 35, 'end_character': 1089, 'bleu_score': 0.877166513664357, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13390563481902294437}, 'section': 'Section::::Philosophy.:The four elements.\n'}]}]