Question: how long was the earthquake in mexico 2017
[{'answer': 'about 20 seconds', 'provenance': [{'wikipedia_id': '55287670', 'title': '2017 Puebla earthquake', 'start_paragraph_id': 1, 'start_character': 134, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55287670', 'title': '2017 Puebla earthquake', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 500, 'bleu_score': 0.7808879817965251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17041890702773545172}, 'section': 'Section::::Abstract.'}]}]