Question: Which Norwegian cross country skier has more Olympic gold medals, Øystein "Pølsa" Pettersen or Petter Northug Jr.?
Context: Tomas Northug (born 19 April 1990) is a Norwegian cross country skier.  He was born in Mosvik, and is a brother of Petter Northug. Petter Eliassen (born December 1, 1985) is a Norwegian cross country skier who has competed since 2004.  His best World Cup finish was second in a 4 x 10 km relay event in Finland in March 2010.  He won the Vasaloppet 2015 and Birkebeinerrennet 2015. Nikita Valeryevich Kriukov (Russian: Никита Валерьевич Крюков ; born 30 May 1985) is a Russian cross country skier who has competed since 2005.  He is a sprint specialist who has won an Olympic Gold and Olympic silver, three World Championship gold medals, six World cup gold medals (three stage races, three individual World Cups), all in the sprint events.  He is arguably the fastest skier ever when it comes to double-poling on the flat in sprints.  He generally favors classic skiing and classic sprints over freestyle, but as he showed in winning the team sprint in the 2013 World Championship, in Val di Fiemme, he is also very strong in the freestyle sprint. Giorgio Di Centa (born October 7, 1972, in Tolmezzo, province of Udine) is an Italian cross country skier who won two gold medals at the 2006 Winter Olympics, including the individual 50 km freestyle race.  He is brother to Olympic gold medalist cross country skier Manuela Di Centa. Magnar Lundemo (4 March 1938 – 7 January 1987) was a Norwegian cross country skier and track and field athlete.  As a skier he participated in two Olympic Games and placed fourth at the 1962 World Championships.  In the athletics he took several national titles, and recorded one nineteenth place at the 1962 European Championships.  He was also a coach. Petter Northug Jr. (born 6 January 1986) is a Norwegian cross-country skier and double Olympic champion.  He has 13 World Championship and 2 Winter Olympic gold medals with 20 medals overall (2 gold, 1 silver and 1 bronze at the Olympics, 13 gold and 3 silver at the World Ski Championships), and 18 individual FIS Cross-Country World Cup wins with 13 podium places.  He is also the record holder for most stage wins (13) in Tour de Ski.  By winning his ninth gold medal in the Nordic World Ski Championships in 4 x 10 km relay in Val di Fiemme 2013 he leveled the achievement of Bjørn Dæhlie who had been the most successful World Champion male skier up to this point. Øystein "Pølsa" Pettersen (born 19 January 1983 in Linderud) is a Norwegian cross country skier who has competed since 2002.  He has four World Cup podiums, his best finish being second in individual sprint events (2006: Germany, 2009: Estonia).  He and Petter Northug won gold in the team sprint event at the 2010 Winter Olympics in Vancouver, Canada.  In the Individual Sprint he was one of three Norwegians to reach the six-man final. Trude Dybendahl, sometimes listed as Trude Dybendahl-Hartz or Trude Dybendahl Hartz (born January 8, 1966) is a former Norwegian cross country skier who competed from 1986 to 1998.  She won three silver medals in the 4 x 5 km at the Winter Olympics (1988, 1992, 1994).  Her best individual Olympic finish was 4th in the 30 km event in 1994. Ola Vigen Hattestad (born 19 April 1982) is a Norwegian cross country skier who has competed since 2002.  He is the most successful cross country sprinter of all time.  Competing in three Winter Olympics, he became Olympic champion in the individual sprint event at Sochi in 2014. Michael Fred Phelps II (born June 30, 1985) is an American former competitive swimmer and the most decorated Olympian of all time, with a total of 28 medals.  Phelps also holds the all-time records for Olympic gold medals (23), Olympic gold medals in individual events (13), and Olympic medals in individual events (16).  In winning eight gold medals at the 2008 Beijing Games, Phelps broke fellow American swimmer Mark Spitz's 1972 record of seven first-place finishes at any single Olympic Games.  At the 2004 Summer Olympics in Athens, Phelps had already tied the record of eight medals of any color at a single Games by winning six gold and two bronze medals.  At the 2012 Summer Olympics in London, Phelps won four gold and two silver medals, and at the 2016 Summer Olympics in Rio de Janeiro, he won five gold medals and one silver.  This made him the most successful athlete of the Games for the fourth Olympics in a row.
Answer: Petter Northug Jr.