Question: when did the first revelation of quran take place
[{'answer': '610 AD', 'provenance': [{'wikipedia_id': '14159630', 'title': "Muhammad's first revelation", 'start_paragraph_id': 1, 'start_character': 73, 'end_paragraph_id': 1, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14159630', 'title': "Muhammad's first revelation", 'start_paragraph_id': 1, 'start_character': 8, 'end_paragraph_id': 1, 'end_character': 350, 'bleu_score': 0.7937770026577791, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11087289112402187159}, 'section': 'Section::::Abstract.'}]}]