Question: how many episodes in soul eater season 1
[{'answer': '13', 'provenance': [{'wikipedia_id': '16923610', 'title': 'List of Soul Eater episodes', 'start_paragraph_id': 2, 'start_character': 798, 'end_paragraph_id': 2, 'end_character': 800, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]