Question: what is the biggest recorded earthquake in history
[{'answer': 'The 1960 Valdivia earthquake', 'provenance': [{'wikipedia_id': '372417', 'title': '1960 Valdivia earthquake', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '372417', 'title': '1960 Valdivia earthquake', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 469, 'bleu_score': 0.705892072564384, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17040953306961796392}, 'section': 'Section::::Abstract.'}]}]