Question: how many seasons of prime suspect tennison are there
[{'answer': '7', 'provenance': [{'wikipedia_id': '237027', 'title': 'Prime Suspect', 'start_paragraph_id': 85, 'start_character': 158, 'end_paragraph_id': 85, 'end_character': 159, 'bleu_score': 1.0, 'section': 'Section::::Reception and impact.\n'}]}]