Question: when did star trek next generation come out
[{'answer': 'September 28 , 1987', 'provenance': [{'wikipedia_id': '27070', 'title': 'Star Trek: The Next Generation', 'start_paragraph_id': 59, 'start_character': 66, 'end_paragraph_id': 59, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Episodes.\n'}]}]