Question: how many seasons of adventure time are there on dvd
[{'answer': '10', 'provenance': [{'wikipedia_id': '26566628', 'title': 'List of Adventure Time episodes', 'start_paragraph_id': 1, 'start_character': 1390, 'end_paragraph_id': 1, 'end_character': 1392, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]