Question: where is the 304 telephone area code located
[{'answer': 'West Virginia', 'provenance': [{'wikipedia_id': '4235109', 'title': 'Area codes 304 and 681', 'start_paragraph_id': 1, 'start_character': 139, 'end_paragraph_id': 1, 'end_character': 152, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4235109', 'title': 'Area codes 304 and 681', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 214, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17113608704694816897}, 'section': 'Section::::Abstract.'}]}]