Question: what year did the cb radio come out
[{'answer': '1945', 'provenance': [{'wikipedia_id': '84705', 'title': 'Citizens band radio', 'start_paragraph_id': 6, 'start_character': 188, 'end_paragraph_id': 6, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::History.:United States.:Origins.\n'}]}, {'provenance': [{'wikipedia_id': '84705', 'title': 'Citizens band radio', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 698, 'bleu_score': 0.95005935086738, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17696265360606875518}, 'section': 'Section::::History.:United States.:Origins.\n'}]}]