Question: when was star trek first shown in the uk
[{'answer': 'July 12 , 1969', 'provenance': [{'wikipedia_id': '27090', 'title': 'List of Star Trek: The Original Series episodes', 'start_paragraph_id': 24, 'start_character': 77, 'end_paragraph_id': 24, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::British transmission.\n'}]}]