Question: how many seasons of teenage mutant ninja turtles nickelodeon
[{'answer': '5', 'provenance': [{'wikipedia_id': '34689624', 'title': 'Teenage Mutant Ninja Turtles (2012 TV series)', 'start_paragraph_id': 22, 'start_character': 18, 'end_paragraph_id': 22, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Plot.:Season 4.\n'}]}]