Question: how many seasons are there of alaska the last frontier
[{'answer': '7', 'provenance': [{'wikipedia_id': '41326962', 'title': 'Alaska: The Last Frontier', 'start_paragraph_id': 30, 'start_character': 18, 'end_paragraph_id': 30, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Episodes.:Season 6.\n'}]}]