Question: what is the voltage in residential power lines
[{'answer': 'less than 1000 volts', 'provenance': [{'wikipedia_id': '1355057', 'title': 'Overhead power line', 'start_paragraph_id': 7, 'start_character': 31, 'end_paragraph_id': 7, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Classification by operating voltage.\n'}]}, {'provenance': [{'wikipedia_id': '1355057', 'title': 'Overhead power line', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 139, 'bleu_score': 0.9021315316859231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15786156580438450010}, 'section': 'Section::::Classification by operating voltage.\n'}]}]