Question: Who was the half-brother of Sweyn Haakonsson that participated in the conquest of English by King Canute the Great?
{'answer': 'Eiríkr Hákonarson', 'supporting_facts': [['Sweyn Haakonsson', 0], ['Sweyn Haakonsson', 3], ['Eiríkr Hákonarson', 2]]}