Question: Ur-Nungal of Uruk was the sixth Sumerian ruler in the First Dynasty of Uruk, he was the father of which person that became the seventh Sumerian ruler in the First Dynasty of Uruk?
{'answer': 'Udul-kalama of Uruk', 'supporting_facts': [['Ur-Nungal', 1], ['Udul-kalama', 0]]}