Question: Lorentz & Sakarias was a group that has collaborated with the actor best known for which role in the series "Vikings"?

full_context: Document 1: Sveinn Ólafur Gunnarsson: Sveinn Ólafur Gunnarsson is an award winning Icelandic stage and film actor who starred in and co-wrote 2011's "Either Way", Ragnar Bragason's "Metalhead" and Baltasar Kormákur's "The Deep". Gunnarsson stars in the film Rams which premiered in the Un Certain Regard section at the 2015 Cannes Film Festival. He also stars in the upcoming American film "Autumn Lights".
Document 2: Highest (Sarkodie album): Highest is the fifth studio album by Ghanaian rapper Sarkodie, released on September 8, 2017. The album is Sarkodie's second release through his label Sarkcess Music. It is a 19-track album (15 songs, 3 interludes and a bonus track). The album was a collaborative project with Jayso. He collaborated with several artists, including Suli Breaks, Jesse Jagz, Bobii Lewis, Jayso, Moelogo, Korede Bello, Flavour, Yung L, Runtown, Victoria Kimani among others.
Document 3: Jonas Malmsjö: Carl Jonas Love Malmsjö (born September 2, 1971) is a Swedish actor who has worked in theatre, TV and radio; he is the son of Swedish actor Jan Malmsjö and the Swedish actress Marie Göranzon. Apart from his work in his native Sweden, which has included a starring role in the TV series "Labyrint", he has been in several productions directed by Ingmar Bergman at the Brooklyn Academy of Music. He was also cast as Skorpa of the White Horse, a Viking warlord in the second half of "The Last Kingdom", a BBC adaptation of the first two books in Bernard Cornwell's "The Saxon Stories" series of historical novels.
Document 4: Sörskogen: Sörskogen was a Swedish progressive rock project Mikael Åkerfeldt of Opeth and Dan Swanö started for fun. Both musicians are known for their wide musical interests. The project was supposedly named after a small community near the Stockholm suburb Huddinge where Mikael practiced with his first band Eruption in the late 1980s. At the Opeth concert on December 18, 2008, Mikael Åkerfeldt claimed to have played soccer for the Sörskogen IF soccer club. Sörskogen is heavily influenced by 1970s prog rock bands, Camel to name but one. Not much is known about the project, except a few references made by Mikael in interviews.
Document 5: Lorentz (rapper): Lorentz Johannes Alexander Berger, (born 28 July 1991), who uses his given name Lorentz as a stage name, is a rap artist from Stockholm, Sweden, rapping in Swedish.
Document 6: Dan le Sac Vs Scroobius Pip: dan le sac Vs Scroobius Pip were a hip-hop duo, combining electronic beats with sung, spoken, and rapped lyrics. The pair are Daniel Stephens (a.k.a. Dan le Sac; production, programming, keyboards, guitars and backing vocals), and David Peter Meads (b.1981) (a.k.a. Scroobius Pip; vocals/rapper/poet). The name "Scroobius Pip" is an intentional misspelling of the Edward Lear poem, "The Scroobious Pip". Dan le Sac originally hails from Corringham and Scroobius Pip from neighbouring Stanford-le-Hope in Essex. Their first single was "Thou Shalt Always Kill". Signed with the Sunday Best record label, Dan le Sac Vs Scroobius Pip released their debut album in 2008. Titled "Angles", it reached 31 in the UK album chart. They released their second album entitled "The Logic of Chance" on 15 March 2010 on Sunday Best. Scroobius Pip released his debut solo album, entitled "Distraction Pieces", on 19 September 2011 – while Dan le Sac released his, "Space Between the Words", on 9 July 2012. The duo's third album entitled "Repent Replenish Repeat" was released 7 October 2013 and debuted at number 22 in the UK top 40, the duo's highest album chart position to date.
Document 7: Peter Bjorn and John: Peter Bjorn and John are a Swedish indie pop/rock band, formed in Stockholm in 1999 and named after the first names of the band's members: Peter Morén (vocals, guitar and harmonica), Björn Yttling (bass guitar, keyboards and vocals) and John Eriksson, known in his solo work as Hortlax Cobra (drums, percussion and vocals). Yttling also worked as producer for the band's first four albums.
Document 8: Lorentz &amp; Sakarias: Lorentz & Sakarias is a hip-hop duo from Stockholm, Sweden consisting of Lorentz Berger and Sakarias Berger. In their career, they have released two full-length albums. They have collaborated with jj, Duvchi, Newkid and Gustaf Skarsgård.
Document 9: Bill Skarsgård: Bill Istvan Günther Skarsgård (born 9 August 1990) is a Swedish actor and model, known for his roles in "Simple Simon", "Hemlock Grove", "Atomic Blonde" and Pennywise the Dancing Clown in the 2017 film "It".
Document 10: Gustaf Skarsgård: Gustaf Caspar Orm Skarsgård (] ; born 12 November 1980) is a Swedish actor. He is best known outside Scandinavia for his role as Floki in the History Channel series "Vikings" as well as for his roles in the films "Evil" (2003), "The Way Back" (2010) and "Kon-Tiki" (2012).
Document 11: Kärlekslåtar (Lorentz album): Kärlekslåtar is the solodebut studio album by the Swedish recording artist Lorentz. After two albums released with his younger brother, Sakarias Berger as the previously Grammis-awarded duo Lorentz & Sakarias, he debuted as a solo artist in 2014. The title "Kärlekslåtar" is Swedish for "Love songs", the songs are written in Swedish, including some few terms and expressions in English. He got a Grammis award "Best HipHop/Soul of The Year", for his work of the album.
Document 12: Jon Gustafsson: Jon Gustafsson is an Iceland born film director. The Icelandic spelling of his name is Jón Gústafsson. Best known for directing the Canadian documentary film Wrath of Gods, starring Gerard Butler, Wendy Ord, Sarah Polley, Paul Stephens and Sturla Gunnarsson. He grew up in Iceland where he started his career as a television performer before studying filmmaking at Manchester Polytechnic and directing for film and theatre at CalArts where he was mentored by the legendary Ealing Studios director Alexander Mackendrick. Wrath of Gods was his second documentary for CBC Newsworld, the first one was The Importance of Being Icelandic. He immigrated to Canada where he directed the low-budget feature film Kanadiana and the music video Brighter Hell for the Canadian rock band The Watchmen. In 2011 Jon Gustafsson produced the award winning short film In A Heartbeat, directed by Karolina Lewicka, through his production company Artio Films.
Document 13: Lars Stalfors: Lars Stalfors is an American musician, record producer, writer and mixer based in Los Angeles, CA. Lars’ most recent credits include Cold War Kids albums “L.A. Divine” (2017) and “Hold My Home” (2014) including the #1 alternative song “First”. He has also worked with and has new releases on deck with Foster the People, Electric Guest, White Lung, Antwon, HEALTH, Alice Glass, Saint Motel, Local Natives.”
Document 14: Peter Stormare: Rolf Peter Ingvar Storm (born 27 August 1953), known professionally as Peter Stormare (] ), is a Swedish actor, voice actor, theatre director, playwright, and musician. He played Gaear Grimsrud in the 1996 film "Fargo", John Abruzzi in the Fox series "Prison Break" and Ingmar in "Swedish Dicks".
Document 15: Alexander Skarsgård: Alexander Johan Hjalmar Skarsgård (] ; born August 25, 1976) is a Swedish actor. He is best known for his roles as vampire Eric Northman on the HBO series "True Blood", Meekus in "Zoolander", the title character in "The Legend of Tarzan", Brad Colbert in the HBO miniseries "Generation Kill" and as Perry Wright in the HBO miniseries "Big Little Lies", for which he won an Emmy.
ground_truth: Floki