Question: how many seasons did star trek next generation run
[{'answer': '7', 'provenance': [{'wikipedia_id': '27070', 'title': 'Star Trek: The Next Generation', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 169, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]