Question: Which Canadian singer began his recording career with a self-titled debut album released on May 19 1998, and won Rolling Stone's Best New Artist award that year?
{'answer': 'Rufus Wainwright', 'supporting_facts': [['Rufus Wainwright discography', 0], ['Rufus Wainwright discography', 1], ['Rufus Wainwright (album)', 0]]}