Question: where are most of the us oil refineries located
[{'answer': 'along the Gulf Coast', 'provenance': [{'wikipedia_id': '47348299', 'title': 'Petroleum refining in the United States', 'start_paragraph_id': 10, 'start_character': 144, 'end_paragraph_id': 10, 'end_character': 164, 'bleu_score': 1.0, 'section': 'Section::::Geography.\n'}]}, {'provenance': [{'wikipedia_id': '47348299', 'title': 'Petroleum refining in the United States', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 427, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3676005493993461407}, 'section': 'Section::::Geography.\n'}]}]