Question: how many episodes in the defenders season 1
[{'answer': 'eight', 'provenance': [{'wikipedia_id': '45083058', 'title': 'The Defenders (miniseries)', 'start_paragraph_id': 3, 'start_character': 65, 'end_paragraph_id': 3, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]