Question: Erik Hivju is the father of which Game of Thrones actor?

Context paragraphs:
Kristofer Hivju: Kristofer Hivju (born December 7, 1978) is a Norwegian actor, producer, and writer.  He is best known for playing the role of Tormund Giantsbane in the HBO fantasy series "Game of Thrones".

Erik Hivju: Erik Hivju (born 24 September 1947) is a Norwegian actor.  Hivju has appeared in more than a dozen television series, as well as several films.  He is the father of the Norwegian actor Kristofer Hivju.

Game of Thrones: Season 4 (soundtrack): The soundtrack album of the fourth season of HBO series "Game of Thrones", titled Game of Thrones: Season 4 was released digitally on June 10, 2014, and on CD on July 1, 2014.  Season 4 of "Game of Thrones" saw the Icelandic band Sigur Rós perform their rendition of "" in a cameo appearance at King Joffrey's wedding in the second episode, "The Lion and the Rose".

National School Scrabble Championship: The National School Scrabble Championship is a Scrabble tournament for 4th-8th graders held annually in North America since 2003.  In 2012, 4th graders were allowed to compete for the first time ever.  The School Scrabble Championship uses the SSWL dictionary which has offensive words such as "lez" or "jew" omitted.  The competition is tournament Scrabble play, in which teams of two play for 25 minutes with digital timers similar to those used in the board game of chess.  The time limit was originally 22 minutes for each side until 2012 when the switch was made to coincide with the traditional times of the Adult Nationals.  The team with the most wins is determined the winner.  If there are multiple teams with the same number of wins, spread is used to break the tie.  Matthew Silver of Connecticut became the first competitor to win two consecutive National School Scrabble Championship titles in 2007 and 2008.  He accumulated a 14-0 record in those two years.  In 2009, for the first time ever, the event was won by a team of 5th graders, Andy Hoang & Erik Salgado of Salem Elementary in North Carolina.  They were the last team to finish the tournament with an undefeated record (7-0).  Since then, the champion has finished either 6-1 (2010) or 7-1 (2011, 2012, 2013).  The winners have often been invited to be on Good Morning America and Jimmy Kimmel Live! .  The event has also received recognition from president Barack Obama and NBA superstar Shaquille O'Neal, who are advocates for the game themselves.  In 2012, Andy Hoang & Erik Salgado of North Carolina became the first team to win two NSSC titles, their first as 5th graders in 2009, and their second as 8th graders in 2012.  The 2013 NSSC was held in Washington D.C. 2013 marked the first time since 2009 that a previous champion will not be competing.  In 2010, 2011, and 2012, Andy Hoang, Erik Salgado, Bradley Robbins, and Evan McCarthy were champions that returned.  Only Andy Hoang and Erik Salgado were the only ones to repeat during the streak.  With Kevin Bowerman and Raymond Gao's win in 2013, North Carolina became the first state to hold 3 National titles (Winning 3 of the last 5 tournaments: 2009, 2012, & 2013), the most of all the states or districts in North America.

1996: Pust på meg!: 1996: Pust på meg! , also known as simply Pust på meg, is a 1997 Norwegian drama film directed by Eva Dahr, Oddvar Einarson, Mona J. Hoel, Marius Holst and Eva Isaksen, and starring Krister Henriksson, Frits Helmuth, Stina Ekblad, Erik Hivju and Bjørn Sundquist.  Four different scenes are being played out in an apartment in Oslo one day in April 1996.

After the Thrones: After the Thrones is an American live television aftershow that premiered on April 25, 2016 and ended on June 28, 2016.  It was hosted by Andy Greenwald and Chris Ryan who discussed episodes of the HBO television series "Game of Thrones".  The talk show is executive produced by Bill Simmons and Eric Weinberger.  Greenwald and Ryan previously hosted a podcast version of the show titled "Watch the Thrones" on Simmons' Grantland website.  A similar talk show called "Thronecast" airs on British channel Sky Atlantic, which also discusses episodes of "Game of Thrones".

Game of Thrones: Season 6 (soundtrack): The soundtrack album of the sixth season of HBO series "Game of Thrones", titled Game of Thrones: Season 6, was released digitally on June 24, 2016, and later released on CD on July 29, 2016.  The album reached No. 1 on the "Billboard"' s Soundtracks chart, and the track from the season finale "Light of the Seven" reached No. 1 on "Billboard"' s Spotify Viral 50 chart.  The "Light of the Seven" is the first time piano is used in the music for "Game of Thrones".  The album was composed by Ramin Djawadi.  The soundtrack has received favorable reviews and peaked at #1 on the U.S. Soundtrack Albums chart and #27 on the U.S. Billboard 200.  It won a International Film Music Critics Association for "Best Original Score for a Television Series".

Game of Thrones (2012 video game): Game of Thrones is an action role-playing video game based on "A Game of Thrones", the first of the "A Song of Ice and Fire" novels by George R. R. Martin, and in part also on the novels' TV adaptation by HBO, "Game of Thrones".

Rise of Nations: Thrones and Patriots: Rise of Nations: Thrones and Patriots is the official expansion pack to the real-time strategy video game "Rise of Nations".  The game is the second in a series of "Rise of Nations" games by Big Huge Games.  "Thrones and Patriots" had its premiere release for Microsoft Windows on April 27, 2004 in North America.  It was ported to and released for Mac OS X in November 2004.  "Rise of Nations: Extended Edition" was released on Steam on June 12, 2014 and includes both the original game and "Thrones and Patriots" with updated graphics and Steamworks integration for multiplayer.

Game of Thrones Theme: "Game of Thrones" Theme", also referred to as "Game of Thrones" Main Title Theme", is the theme music of the television series "Game of Thrones".  It plays during the title sequence and was composed by Ramin Djawadi in 2011, after series creator David Benioff and D. B. Weiss approached him requesting a theme.  Asked to avoid flutes and violins, which the producers felt were overused in fantasy themes, Djawadi used the cello as the lead instrument.  The piece begins in a minor key, then switches between corresponding major and minor keys repeatedly.  Djawadi was shown a preliminary rendering of the title sequence before composing this music to accompany it.  Several artists have covered or parodied the music, sometimes adding lyrics to the originally instrumental work.

Supporting paragraphs: Erik Hivju Kristofer Hivju
Answer: Kristofer Hivju