Question: Ælfgifu of Northampton was the first wife of King Cnut of England and Denmark and mother to a King of England from 1035 to 1040 known as Harefoot; what did the name signify?
{'answer': 'he was fleet of foot', 'supporting_facts': [['Ælfgifu of Northampton', 0], ['Harold Harefoot', 0], ['Harold Harefoot', 1]]}