Question: Erna Siikavirta was a member of the Finnish band formed in what year?

Context paragraphs:
Hanoi Rocks: Hanoi Rocks was a Finnish rock band formed in 1979.  They were the first Finnish band to chart in the UK and they were also popular in Japan.  The band broke up in June 1985 after the drummer Nicholas "Razzle" Dingley had died in a car accident during their first US tour in December 1984.  Original vocalist Michael Monroe and guitarist Andy McCoy reunited in 2001 with a new line-up of Hanoi Rocks until 2009.  Although musically closer to traditional rock n' roll and punk, Hanoi Rocks have been cited as a major influence in the glam metal genre for bands such as Guns N' Roses, Skid Row and Poison.

Lordi: Lordi (] ) are a Finnish hard rock/heavy metal band, formed in 1992 by the band's lead singer, songwriter and costume maker, Mr Lordi.  In addition to their melodic metal music, Lordi are also known for wearing monster masks and using horror elements with pyrotechnics during concerts and music videos.

Jonas W. Karlsson: Jonas W. Karlsson is a Finnish producer and songwriter.  He is known from the Finnish band Elokuu, which he formed together with Finnish reggae artist Nopsajalka and rap artist Juno.  The band's first single "Soutaa huopaa" was Finland's most purchased song on iTunes after its release.  It was also the most listened song on Spotify for three weeks in Finland and one of the most-played songs on the radio in 2012.

Roope Salminen &amp; Koirat: Roope Salminen & Koirat is a Finnish band fronted by rapper and television personality Roope Salminen.  Originally formed as a one-gig only cover band, they have since had success with original songs such as "Madafakin darra" and the parent album "Madafakin levy", both of which reached number-one on the Official Finnish Charts.

Syven: Syven is a Finnish band from Riihimäki, formed in 2007.  The band's name can be translated as "depth" from Finnish.  The band released their début album "Aikaintaite" through Vendlus Records in 2011; the second album, "Corpus Christi (Syven album)", was released the following year.

Agents (Finnish band): Agents is a Finnish band formed in 1979, playing rautalanka, schlager and rock'n'roll music.  The head figure and musical director of the band is solo guitarist Esa Pulliainen.

Erna Siikavirta: Erna Inari Kaarina Siikavirta (born 8 October 1977 in Espoo) is a Finnish keyboard player.  She is best known as a member of the Finnish hard rock band "Lordi", which she joined in 1997 under the stage name Enary.  She left the band in 2005, at the request of the other members.

Winter's Verge: Winter's Verge is a power metal band formed in Nicosia, Cyprus in 2004.  Winter's Verge is one of the best-known bands from Cyprus and one of the few artists signed to an international record label.  They have participated in overseas tours, most notably with Finnish band Stratovarius.  Their latest album entitled "Beyond Vengeance" was released in April 2012 by Massacre Records.

Tenhi: Tenhi is a Finnish band formed in 1996, playing melancholic neofolk music.

Hateform: Hateform is a Finnish band that plays death/thrash metal.  The band was founded by Tomy Laisto, Joni Suonenjärvi, and Tuomas Vähämaa in 2004.  Soon after Hateform was founded Petri Nyström, the current lead vocalist joined the band.  In 2005 Ville Vänni, the lead guitar player of Insomnium joined the band.  In 2005 Vänni departed from the band because of his own projects.  In 2006 Tom Gardiner, the lead guitar player from Mordred and Scorched Earth Tactics replaced Vänni.  The first album of the band, titled Dominance, came out in 2007.  In 2008 Hateform won The Year's Beginner Award at Finnish Metal Awards.  The newest studio album of Hateform, Origins of Plague, came out 2010.

Supporting paragraphs: Erna Siikavirta Lordi
Answer: 1992