Question: what's the population of the twin cities metro area
[{'answer': '3,866,768'}, {'provenance': [{'wikipedia_id': '102607', 'title': 'Minneapolis–Saint Paul', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 577, 'bleu_score': 0.922284803830492, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6148279192460509770}, 'section': 'Section::::Abstract.'}]}]