Question: where does the area code 470 come from
[{'answer': 'metropolitan Atlanta , Georgia', 'provenance': [{'wikipedia_id': '4102185', 'title': 'Area codes 678 and 470', 'start_paragraph_id': 1, 'start_character': 80, 'end_paragraph_id': 1, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]