Question: what is the worlds oldest work of literature outside of the bible
[{'answer': 'Sumerian texts from Abu Salabikh', 'provenance': [{'wikipedia_id': '3709305', 'title': 'Ancient literature', 'start_paragraph_id': 6, 'start_character': 17, 'end_paragraph_id': 6, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::List of ancient texts.:Bronze Age.\n'}]}]