Question: when did the book of ruth take place
[{'answer': 'the fifth century BCE'}, {'provenance': [{'wikipedia_id': '4381', 'title': 'Book of Ruth', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 663, 'bleu_score': 0.8233925397495281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2902911535922175735}, 'section': 'Section::::Composition.\n'}]}]