Question: Which one of these artists has occasionally pursued acting, Joan Jett and Ihsahn 

full_context: Document 1: I Love Rock 'n' Roll (disambiguation): "I Love Rock 'n' Roll" is a song by Arrows made famous by Joan Jett & the Blackhearts, covered by multiple artists. It may also refer to:
Document 2: Joan Jett: Joan Marie Larkin (born September 22, 1958), known professionally as Joan Jett, is an American rock singer, songwriter, composer, musician, record producer and occasional actress.
Document 3: Infernus: Roger Tiegs (born on 18 June 1972), better known by his stage name, Infernus, is a Norwegian black metal musician and Satanist. He is the sole founding member and chief ideologist of the Norwegian black metal band Gorgoroth, which was formed in 1992, as well as the founder and head of Forces of Satan Records. He is mainly a guitarist, but has also participated as bassist, drummer and vocalist on several recordings released both by Gorgoroth and other bands.
Document 4: Gaahl: Kristian Eivind Espedal (born 7 August 1975), better known by his stage name Gaahl, is a Norwegian vocalist and artist. He is best known as the former frontman of Norwegian black metal band Gorgoroth. He is also the founder and frontman of Trelldom and Gaahlskagg. Since leaving Gorgoroth he has been involved with God Seed, Wardruna, and Gaahls Wyrd. He was the focus of the documentary "True Norwegian Black Metal" and also appeared in the film "Flukt".
Document 5: Bad Reputation (Joan Jett album): Bad Reputation is the debut solo studio album by American recording artist Joan Jett, originally self-released in 1980 as Joan Jett after her previous band The Runaways disbanded, then re-issued on Boardwalk Records in 1981 as "Bad Reputation".
Document 6: Flashback (Joan Jett album): Flashback is the eighth studio album, and a compilation album of outtakes and rare songs released by Joan Jett and the Blackhearts. The album was initially released in late 1993 and was reissued in 1998 with a slightly different track listing. The 1998 version dropped five tracks from the 1993 release: "Summertime Blues", "Louie Louie", "Star Star", "Stand Up for Yourself" and "Call Me Lightning" and replaced them with "Real Wild Child (Wild One)", a live version of "Bad Reputation" and "Right 'Til the End", which was only available on the cassette version of the 1993 release. "Call Me Lightning" and "Summertime Blues" were later added as bonus tracks on reissues of "Bad Reputation" and "Louie Louie" became a bonus track on the reissue of "I Love Rock 'N Roll". "Star Star" was included as an unlisted "surprise" track on the 1983 cassette release of "Album", but was later removed after the original cassette was pulled from some stores because of non-labelled "explicit" track lyrics. The song was restored on the CD release.
Document 7: King ov Hell: Tom Cato Visnes (born November 27, 1974), better known as King ov Hell or simply King, is a Norwegian musician. He is best known as the former bassist of black metal band Gorgoroth, but he is also the co-founder of Ov Hell, God Seed, Jotunspor, Audrey Horne, Sahg, I and Temple of the Black Moon.
Document 8: Shagrath: Stian Thoresen (born 18 November 1970) is a Norwegian musician best known as the vocalist, founding member and multi instrumentalist of Dimmu Borgir.
Document 9: Ihsahn: Ihsahn (born 10 October 1975 as Vegard Sverre Tveitan) is a Norwegian composer, multi-instrumentalist, and vocalist. He is best known for his work with Norwegian black metal band Emperor. He has appeared in Thou Shalt Suffer, played in Peccatum with his wife Ihriel (real name Heidi S. Tveitan), and now devotes himself to his solo albums.
Document 10: I Love Rock 'n Roll (album): I Love Rock 'n Roll is the second studio album by Joan Jett and the first to feature her backing band The Blackhearts. Soon after the first recording sessions at Soundworks Studios, original Blackheart guitarist Eric Ambel was replaced by Ricky Byrd. It is Jett's most commercially successful album to date with over 10 million copies sold, largely due to the success of the title track, which was released as a single soon after the album was released.
Document 11: I Love Rock 'n' Roll: "I Love Rock 'n' Roll" is a rock song written in 1975 by Alan Merrill of the Arrows, who recorded the first released version. The song was later made famous by Joan Jett & the Blackhearts in 1982. Alan Merrill has played the song live in Europe, Japan and most often in his home town New York City.
Document 12: Emperor (band): Emperor is a Norwegian black metal band formed in 1991, regarded as highly influential by critics and emerging black metal bands. The group split up in 2001, but reunited from 2005 to 2007 for a few festival dates and brief US tours, and again reunited in 2013 to 2014. The group was founded by Ihsahn (guitar/vocal) and Samoth (then, drums).
Document 13: Ivar Bjørnson: Ivar Bjørnson (born November 27, 1977 in Etne) is a Norwegian composer/guitarist for the progressive black/viking metal band Enslaved. He is, along with Grutle Kjellson, one of only two founding members left in the current line-up, being only 13 years old at the time of the band's formation in 1991. Bjørnson and Grutle Kjellson performed in a death metal band called Phobia in 1989. The two decided that they wanted to form a new band in a more black metal style, and after discovering their shared fascination with Norse mythology, this set the groundwork for Enslaved. Beyond his duties on guitar, he writes almost all of the music for Enslaved as well as much of the lyrics. He has said that "When we started Enslaved we wanted to have the same level of commitment to something spiritual as our contemporaries in black metal [have with] the Satanic side. The dark destructive part of black metal didn't seem right because we didn't have any commitment to any Satanic ideology." He contributed keyboard/synth work to Borknagar's first three albums and synth/piano work on the Gorgoroth albums "Incipit Satan" and "Destroyer" under the name "Daimonion"; and also produced the first demo from black metal band Orcustus.
Document 14: Tania Stene: Tania Stene (also Tanya Stene, Tanja Stene, Nacht, Nachthexe) is a Norwegian interdisciplinary artist. She works with different techniques such as oils/acrylics, photography, collage, video, sound and installation. Originally known as half of the ritual ambient duo Aghast (along with Andréa Nebel), her newer music is more experimental and noisy (collaboration with Alexei Borisov on Fabriksampler V2 - Pharmafabrik Recordings). She is known for cover art & photo shoots for some of the biggest Norwegian black metal bands in the '90s, including Darkthrone, Ulver, Thorns, Satyricon, Burzum, Emperor and Sunn O))) live album. Tania Stene used to be married to Fenriz (Darkthrone). She is also known for her cover art of "Bergtatt", "Nattens Madrigal" and "Hliðskjálf", and for official photo shoots of Isengard and Thorns.
Document 15: Janet Jackson: Janet Damita Jo Jackson (born May 16, 1966) is an American singer, songwriter, dancer and actress. Known for sonically innovative, socially conscious, and sexually provocative records, elaborate stage shows, and high-profile television and film roles, she has been a prominent figure in popular culture for over 30 years.
ground_truth: Joan Jett