Question: when did the ottoman empire take over turkey
[{'answer': '1453', 'provenance': [{'wikipedia_id': '22278', 'title': 'Ottoman Empire', 'start_paragraph_id': 1, 'start_character': 876, 'end_paragraph_id': 1, 'end_character': 880, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '22278', 'title': 'Ottoman Empire', 'start_paragraph_id': 1, 'start_character': 170, 'end_paragraph_id': 1, 'end_character': 931, 'bleu_score': 0.7664171838229361, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1924262341924031622}, 'section': 'Section::::Abstract.'}]}]