Question: what year is considered the beginning of islam
[{'answer': 'AD 622'}, {'provenance': [{'wikipedia_id': '14810', 'title': 'Islamic calendar', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 612, 'bleu_score': 0.825810439298392, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1870774454684801992}, 'section': 'Section::::Abstract.'}]}]