Question: who wrote the first 4 books of the old testament
[{'answer': 'exilic returnees', 'provenance': [{'wikipedia_id': '22326', 'title': 'Old Testament', 'start_paragraph_id': 16, 'start_character': 184, 'end_paragraph_id': 16, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::Composition.\n'}]}, {'provenance': [{'wikipedia_id': '22326', 'title': 'Old Testament', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 560, 'bleu_score': 0.575884981877668, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6166476315687696652}, 'section': 'Section::::Composition.\n'}]}]