Question: what is the name of the largest city in ecuador
[{'answer': 'Guayaquil', 'provenance': [{'wikipedia_id': '343372', 'title': 'List of cities in Ecuador', 'start_paragraph_id': 13, 'start_character': 12, 'end_paragraph_id': 13, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::List.:Alphabetical.\n'}]}]