Question: when did power rangers come out in america
[{'answer': '1993', 'provenance': [{'wikipedia_id': '173486', 'title': 'Power Rangers', 'start_paragraph_id': 1, 'start_character': 539, 'end_paragraph_id': 1, 'end_character': 543, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '173486', 'title': 'Power Rangers', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 1481, 'bleu_score': 0.9813502143897421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2463855745709161760}, 'section': 'Section::::History.:Broadcast history.\n'}]}]