Question: The 2011–12 Ottawa Senators season was the 20th season (19th season of play) of the Ottawa Senators of the National Hockey League (NHL), three Senators were nominated for NHL awards, including which Swedish professional ice hockey player who serves as captain of the Ottawa Senators of the National Hockey League (NHL), received the James Norris Trophy?
{'answer': 'Erik Karlsson', 'supporting_facts': [['2011–12 Ottawa Senators season', 4], ['Erik Karlsson', 0]]}