Question: What nationality is the bassist who joined Nightwish in 2002?

full_context: Document 1: Bless the Child (song): "Bless the Child" is the ninth single by Finnish symphonic metal band Nightwish, released as the second single from their album "Century Child". It is one of two songs which were filmed from the "Century Child" album, with other one being "End of All Hope". It was also the first song bassist/vocalist Marco Hietala worked on after he joined the band replacing Sami Vänskä.
Document 2: Tuomas Holopainen: Tuomas Lauri Johannes Holopainen (born 25 December 1976) is a Finnish songwriter, multi-instrumentalist musician (but mainly keyboardist) and record producer, best known as the founder, leader, keyboardist and songwriter of symphonic metal band Nightwish. He has also studied jazz and classical styles, but prefers to be influenced by harmonic film music.
Document 3: Nightwish: Nightwish is a symphonic metal band from Kitee, Finland. The band was formed in 1996 by lead songwriter and keyboardist Tuomas Holopainen, guitarist Emppu Vuorinen, and former lead singer Tarja Turunen. The band soon picked up drummer Jukka Nevalainen, and then bassist Sami Vänskä after the release of their debut album, "Angels Fall First" (1997). In 2001, Vänskä was replaced by Marco Hietala, who also took over the male vocalist role previously filled by Holopainen or guest singers.
Document 4: Markus Toivonen: Markus Toivonen (born 1979 in Helsinki) is the founding member of the Finnish folk/death metal band Ensiferum. Markus founded the band in 1995 and is the sole original member to have lasted the distance to Ensiferum's present incarnation. His role in the band is guitarist and primary songwriter. He has always contributed backing vocals and since the departure of Jari Mäenpää in 2004 has taken up a greater role behind the microphone, sharing the clean vocal parts with new bass player Sami Hinkka, with Mäenpää's replacement Petri Lindroos handling the harsh vocals.
Document 5: Tarot (album): Tarot is the sixth full-length album by the Spanish power metal band Dark Moor. The songs of the album are all named after the Major Arcana deck in the Tarot card game. The first single extracted from the album was "The Chariot". Manda Ophius of the Dutch symphonic metal band Nemesea is the guest female vocalist on "Tarot".The final track, "the Moon", samples Ludwig van Beethoven's "Symphony No. 5" and "Moonlight Sonata". The bonus track, "Mozart's March" is based on Wolfgang Amadeus Mozart's "Rondo A'la Turca". It was also performed live in Granada, Spain, Piorno Rock, back in 2002, five years before it was even released.
Document 6: Marco Hietala: Marko Tapani "Marco" Hietala (born 14 January 1966) is a Finnish heavy metal vocalist, bass guitarist and songwriter. Internationally, he is most known as the current bass guitarist, male vocalist and secondary composer to Tuomas Holopainen, of the symphonic metal band Nightwish. He is also the vocalist and bassist as well as composer and lyricist for the heavy metal band Tarot.
Document 7: Dark Passion Play: Dark Passion Play is the sixth studio album by Finnish symphonic metal band Nightwish, released on 26 September 2007 in Finland, 28 September in Europe and 2 October 2007 in the United States. It is the first album without original vocalist Tarja Turunen, who was dismissed in 2005, as well as the first album involving future member Troy Donockley on uilleann pipes and tin whistle. It is the first of only two albums with vocalist Anette Olzon, who was eventually dismissed in 2012 after the release of the band's subsequent album, "Imaginaerum". Tuomas Holopainen has referred to it as the "album that saved his life".
Document 8: HIM discography: Finnish gothic rock band HIM have released eight studio albums, one live album, eight compilation albums, one EP, twenty-seven singles, three video albums, and twenty-nine music videos. Formed in 1991 by vocalist Ville Valo and bassist Mikko "Mige" Paananen under the name His Infernal Majesty, the band broke up in 1993, but was reformed in 1995 by Valo and guitarist Mikko "Linde" Lindström. After being rejoined by Mige, as well new additions keyboardist Antto Melasniemi, rhythm guitarist Oki and drummer Juhana "Pätkä" Rantala, the band, now called HIM, signed to BMG, and released the EP "" in 1996. The EP charted at number nine on the Finnish Singles Chart, and in 1997, the band, sans Oki, released their debut album "Greatest Lovesongs Vol. 666", which was certified gold and later platinum in Finland. In 2000, now with drummer Mika "Gas Lipstick" Karppinen and keyboardist Juska Salminen, the band released the album "Razorblade Romance", which was certified double platinum in Finland, triple gold in Germany and gold in Austria. Its first single, "Join Me in Death", also charted at number-one in Finland and Germany, eventually going platinum in their home country and gold in Germany and Austria. Following the addition of Janne "Burton" Puurtinen on keyboards, HIM released "Deep Shadows and Brilliant Highlights" and "Love Metal" in 2001 and 2003 respectively. Both were certified platinum in Finland, as well as gold in Austria and Germany respectively.
Document 9: Eicca Toppinen: Eino Matti "Eicca" Toppinen (born 5 August 1975) is a Finnish cellist, songwriter, producer, arranger, and (as a hobby) drummer. In 1993 he formed the quartet Apocalyptica.
Document 10: Tarot (band): Tarot is a heavy metal band from Finland. They are most famous for the song “Wings of Darkness” from the 1986 album "Spell of Iron". While having enjoyed a broad underground popularity in Finland, the band has never been very famous elsewhere until gaining new success in recent years when their singer and bassist Marco Hietala joined Nightwish in 2002.
Document 11: Nightwish discography: The discography of the Finnish symphonic metal band Nightwish consists of eight studio albums, one extended play, four live albums, seven compilations, thirteen music videos and twenty one singles. The band was formed in 1996 by songwriter and keyboardist Tuomas Holopainen, guitarist Emppu Vuorinen, and former vocalist Tarja Turunen; Nightwish's current line-up has six members although Turunen has been replaced by Anette Olzon, and the original bassist, Sami Vänskä, has been replaced by Marco Hietala, who also took over the male vocalist part. Olzon left the band in 2012 and was replaced by Floor Jansen.
Document 12: Timo Kotipelto: Timo Antero Kotipelto (born 15 March 1969 in Lappajärvi, Finland) is the vocalist of the Finnish power metal band Stratovarius and is the creator and vocalist of the power metal band Kotipelto. Kotipelto is currently the longest standing member of Stratovarius, after the departure of Timo Tolkki.
Document 13: James Hetfield: James Alan Hetfield (born August 3, 1963) is an American musician, singer, and songwriter known for being the co-founder, lead vocalist, rhythm guitarist, and main songwriter for the American heavy metal band Metallica. Hetfield is mainly known for his intricate rhythm playing, but occasionally performs lead guitar duties and solos, both live and in the studio. Hetfield co-founded Metallica in October 1981 after answering a classified advertisement by drummer Lars Ulrich in the Los Angeles newspaper "The Recycler". Metallica has won nine Grammy Awards and released ten studio albums, three live albums, four extended plays and 24 singles.
Document 14: List of Dark Passion Play editions: Dark Passion Play is the sixth studio album by Finnish symphonic power metal quintet Nightwish, released on September 26, 2007 in Finland, September 28 in Europe and October 2, 2007 in the United States. It was the first Nightwish album with the band's new lead singer, Anette Olzon, and the first album not featuring former vocalist Tarja Turunen, who was dismissed in October 2005. Lead songwriter Tuomas Holopainen has referred to it as the 'album that saved his life'.
Document 15: Ville Valo: Ville Hermanni Valo (born 22 November 1976) is a Finnish singer-songwriter and multi-instrumentalist, best known as the lead vocalist and main songwriter of the Finnish gothic rock band HIM. Influenced by the likes of Black Sabbath and Type O Negative, Valo began his career playing bass and drums in various bands around Helsinki, before forming HIM in 1991. The band would go on to become one of the most commercially successful Finnish bands of all time, and the first to receive a gold record in the United States. Valo is also credited as the creator of the heartagram, the trademarked symbol of HIM.
ground_truth: Finnish