Question: when was the ottoman empire founded and when did it end
[{'answer': 'c. 1299', 'provenance': [{'wikipedia_id': '22278', 'title': 'Ottoman Empire', 'start_paragraph_id': 10, 'start_character': 17, 'end_paragraph_id': 10, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '1922 / 1923'}]