Question: when were cctv cameras first used in the uk
[{'answer': '1985', 'provenance': [{'wikipedia_id': '87179', 'title': 'Closed-circuit television', 'start_paragraph_id': 13, 'start_character': 697, 'end_paragraph_id': 13, 'end_character': 701, 'bleu_score': 1.0, 'section': 'Section::::History.:Application.\n'}]}]