Question: Whatis the name of this Ottoman sultan who ruled from August 1444-September 1446 that brought an end to the Eastern Roman Empire and was the son of Murad II
{'answer': 'Mehmed the Conqueror', 'supporting_facts': [['Murad II', 3], ['Mehmed the Conqueror', 1], ['Mehmed the Conqueror', 2]]}