Question: Karl Petter Løken played matches for the football team that plays in what league?

Context paragraphs:
Rosenborg BK: Rosenborg Ballklub, commonly referred to simply as Rosenborg (] ) or (especially locally) RBK, is a Norwegian professional football club from Trondheim that plays in the Eliteserien. The club have won a record 24 league titles, eleven Norwegian Football Cup titles and have played more UEFA matches than any other Norwegian team.  RBK play their home games at the all-seater Lerkendal Stadion which has a capacity of 21,400.  Kåre Ingebrigtsen was appointed head coach in July 2014.

England national football B team: England B is a secondary football team run occasionally as support for the England national football team.  At times they have played other nations' full teams; they have also played matches against 'B' teams from other football associations.  Since the team's first use in 1947, there have been 54 official and 3 unofficial B team matches.  It has been inactive since May 2007.

Iran B national football team: Iran B is a secondary football team run occasionally as support for the Iran national football team.  At times they have played other nations' full teams; they have also played matches against 'A' and 'B' teams from other football associations.

Karl Petter Løken: Karl Petter "Kalle" Løken (born "Karl Petter Löken", 14 August 1966 in Karlskoga, Sweden) is a Norwegian former football player.  He played 243 matches in Norwegian Premier League, most of them for Rosenborg, Trondheim, earning seven league titles and four cup championships.  Løken was capped 36 times for Norway national football team.  Løken is a master of engineering and is currently also working part-time as sports commentator for Norwegian Broadcasting Corporation.

West Coast Eagles: The West Coast Eagles is a professional Australian rules football club based in Perth, Western Australia, currently playing in the Australian Football League (AFL).  Representing the Australian state of Western Australia, in particular the Perth metropolitan region, the club trains and plays its home games at Subiaco Oval (Domain Stadium) in Subiaco, having previously also played matches at the WACA Ground.  The club is one of two Australian Football League clubs based in Western Australia, with the other being the Fremantle Football Club.

Nepal national football B team: Nepal B (sometimes referred to as Nepal Blue) is a secondary football team run occasionally as support for the Nepal national football team, who are also known as Nepal Red when the two teams play simultaneously.  At times they have played other nations' full teams; they have also played matches against 'B' teams from other football associations.

Aidan Parker: Aidan William John Parker (born 25 January 1983) is an Australian rules footballer who is the current captain of the Subiaco Football Club in the West Australian Football League (WAFL).  He was previously rookie-listed with the Adelaide Football Club in Australian Football League (AFL), and also played matches for South Adelaide and Glenelg in the South Australian National Football League (SANFL).  Parker has played in three premierships for Subiaco, and also represented Western Australia in four interstate matches.

Austria national rugby league team: The Austrian national rugby league team are the national rugby league team of Austria.  They were created to continue the spread of the game of rugby league football throughout Central Europe.  Austria have played matches against a number of other European countries and also competed in the Central Europe Development Tri-Nations in 2006 alongside Germany and Estonia.

Jamaica national rugby league team: The Jamaica national rugby league team represents Jamaica in international rugby league football tournaments.  The team are new, and made their full international debut at the 2009 Atlantic Cup in Jacksonville, Florida, playing against the USA.  Prior to this they had played matches against touring sides from England and Australia.  The team plays in yellow jerseys with green shorts and green socks.  It is largely made up of players from the Jamaican domestic competition and heritage players from the English leagues.

Belgium national football B team: Belgium B was a secondary football team that occasionally served as support for the Belgium national football team.  At times they have played against the full national team of Luxembourg; they have also played matches against 'B' or U-23 teams from other football associations.  Since the team's first use in 1924, there have been at minimum 104 games; most of them against Luxembourg, but also against English, French, Italian, Norwegian, Portuguese, and Swiss teams.  The last recorded match dates from February 2000 (a 1–1 draw against France B).

Supporting paragraphs: Karl Petter Løken Rosenborg BK
Answer: Eliteserien