Question: how many episodes in north and south book 1
[{'answer': '6', 'provenance': [{'wikipedia_id': '4969625', 'title': 'North and South (miniseries)', 'start_paragraph_id': 1, 'start_character': 110, 'end_paragraph_id': 1, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]