Question: how many chapters does the book of ruth have
[{'answer': 'four', 'provenance': [{'wikipedia_id': '4381', 'title': 'Book of Ruth', 'start_paragraph_id': 4, 'start_character': 26, 'end_paragraph_id': 4, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'provenance': [{'wikipedia_id': '4381', 'title': 'Book of Ruth', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 39, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9741962884289787047}, 'section': 'Section::::Structure.\n'}]}]