Question: when did the epic of gilgamesh take place
[{'answer': 'c. 2100 BC'}, {'provenance': [{'wikipedia_id': '80028', 'title': 'Epic of Gilgamesh', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1048, 'bleu_score': 0.908829561270574, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7275137243292850267}, 'section': 'Section::::Abstract.'}]}]