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?
Context: The 1996–97 Ottawa Senators season was the fifth season of the Ottawa Senators of the National Hockey League (NHL).  This season saw great improvement by the club, as the team finished out of last place in the National Hockey League (NHL) for the first time in team history, and went on to qualify for the 1997 Stanley Cup playoffs as the seventh seed in the Eastern Conference.  In the playoffs, the Senators lost in the first round (Conference quarter-finals) to the Buffalo Sabres. The 2004–05 Ottawa Senators season was the 13th season of the Ottawa Senators of the National Hockey League (NHL).  All games were cancelled due to the 2004–05 NHL lockout, which cancelled play for the entire League.  Several of the Senators' players played for teams in European hockey leagues while some played for the Senators' American Hockey League (AHL) affiliate, the Binghamton Senators. The Ottawa Senators are a professional ice hockey team based in Ottawa, Ontario, Canada.  The team is a member of the Atlantic Division of the Eastern Conference of the National Hockey League (NHL).  The Senators, named after the original Ottawa Senators, began play in the NHL as an expansion team in 1992.  Having first played at the Ottawa Civic Centre, the Senators have played their home games at the Canadian Tire Centre, which was first named The Palladium, since 1996.  The team has been to the Stanley Cup Finals in the 2006–07 season, but lost to the Anaheim Ducks in five games.  The Senators are owned by Eugene Melnyk.  Pierre Dorion is the team's general manager.  Erik Karlsson is the team captain.  The current head coach is Guy Boucher, hired on May 8, 2016. The 2005–06 Ottawa Senators season was the 14th season (13th season of play) of the Ottawa Senators of the National Hockey League (NHL).  After one of their franchise-best regular seasons, finishing with 113 points, the Senators made it to the Eastern Conference Semi-final, in which the Buffalo Sabres eliminated Ottawa in five games. Erik Sven Gunnar Karlsson (] ; born 31 May 1990) is a Swedish professional ice hockey player who serves as captain of the Ottawa Senators of the National Hockey League (NHL).  Karlsson was drafted in the first round, 15th overall, by the Senators at the 2008 NHL Entry Draft.  Karlsson is a two-time winner of the James Norris Memorial Trophy as the NHL's best defenceman, winning the award in 2012 and 2015. The 2003–04 Ottawa Senators season was the 12th season of the Ottawa Senators of the National Hockey League (NHL).  This season would see the Senators again finish with over 100 points, finishing with 102, but this was good for only third in the tightly-contested division, as the Boston Bruins would have 104 and the Toronto Maple Leafs 103.  Ottawa would meet Toronto in the first-round of the playoffs for the fourth time, where the Maple Leafs would win the series 4–3 to end the Senators' playoff hopes.  Ottawa would fire Head Coach Jacques Martin after the playoff round. The 2007–08 Ottawa Senators season was the 16th season (15th season of play) of the Ottawa Senators of the National Hockey League (NHL).  The Senators started strongly in the regular season, but the team slumped after Christmas, and just barely qualified for the playoffs.  The slump caused the Senators to fire John Paddock, who was in his first season as head coach.  The Senators lost in the first round, losing in a sweep by the Pittsburgh Penguins. The 2010–11 Ottawa Senators season was the 19th season (18th season of play) of the Ottawa Senators of the National Hockey League (NHL).  The Senators posted a regular season record of 32 wins, 40 losses, and 10 overtime/shootout losses for 74 points, failing to qualify for the Stanley Cup playoffs for the second time in three seasons.  After falling to last place in the conference by the end of January, the Senators started a rebuild, trading away several veterans for draft choices.  Head Coach Cory Clouston was fired at the end of the season. Cody Ceci (born December 21, 1993) is a Canadian professional ice hockey player with the Ottawa Senators of the National Hockey League (NHL).  After playing junior-age ice hockey with the Ottawa 67's, Ceci was selected 15th overall in the 2012 NHL Entry Draft by the Senators.  He made his NHL debut in the 2013–14 season after playing for the Senators' American Hockey League (AHL) affiliate Binghamton Senators. The 2011–12 Ottawa Senators season was the 20th season (19th season of play) of the Ottawa Senators of the National Hockey League (NHL).  It was considered a rebuilding season for the Senators after an off-season of high player personnel turnover and the hiring of a new head coach.  Although the Senators were not expected to make the playoffs, the team qualified eighth.  The team lost, however, in the first round to the first-place New York Rangers, although they took the series to a seventh game.  Three Senators were nominated for NHL awards: captain Daniel Alfredsson for the Bill Masterton Memorial Trophy, Erik Karlsson for the James Norris Trophy and Head Coach Paul MacLean for the Jack Adams Award.  The Senators hosted the NHL All-Star Game and its festivities.  Alfredsson was named captain of one of the teams and five Senators played in the Game.
Answer: Erik Karlsson