Question: Are both Christopher Amott and Stephen Malkmus guitarists?

full_context: Document 1: Maynard James Keenan: Maynard James Keenan (born James Herbert Keenan; April 17, 1964), often referred to by his initials MJK, is an American singer, songwriter, musician, record producer, actor, and winemaker. He is best known as the vocalist for the alternative rock bands Tool, A Perfect Circle, and Puscifer.
Document 2: Arch Enemy discography: The following is a comprehensive discography of Arch Enemy, a Swedish melodic death metal band that formed in 1996. Its members were in bands such as Carcass, Armageddon, Carnage, Mercyful Fate, Spiritual Beggars, and Eucharist. It was founded by Carcass guitarist Michael Amott along with Johan Liiva, who were both originally from the influential death metal band Carnage. The band has released ten studio albums, three live albums, three video albums and three EPs. The band was originally fronted by Johan Liiva, who was replaced by German Angela Gossow as lead vocalist in 2000. Gossow left the band in March 2014 and was replaced by Canadian Alissa White-Gluz, while remaining as the group's manager.
Document 3: Stephen Malkmus: Stephen Joseph Malkmus (born May 30, 1966) is an American musician best known as the lead singer and guitarist of the indie rock band Pavement. He currently performs with Stephen Malkmus and the Jicks.
Document 4: Martin Bengtsson: Martin Bengtsson is a Swedish metal musician. He was a key part of the influential Swedish melodic death metal scene. He was a member of the melodic death metal band Arch Enemy between 1997 and 1998, and played bass guitar on their second album, Stigmata. He was also a member of Arch Enemy guitarist Christopher Amott's side project Armageddon in 1997.
Document 5: Carl Johan Grimmark: Carl Johan Grimmark is a Christian guitarist born in Gothenburg, Sweden October 14, 1977. He has appeared with several influential Christian metal bands including Narnia, Saviour Machine, and Rob Rock. He recently joined the band Beautiful Sin in 2006. He also has been a special guest guitarist on fellow Narnia bandmate Christian Liljegren's side projects Divinefire and Audiovision. He recently recorded his debut solo album that is set to be titled "Grimmark", where he also handles the lead vocals. Grimmark's style of playing, especially on Narnia's earlier work, is often compared to the neo-classical metal stylings of Yngwie Malmsteen , or under a more broad genre, neo-classicism.
Document 6: Michael Amott: Michael Amott (born 28 July 1969) is a Swedish guitarist, songwriter, founding member of the bands Arch Enemy, Spiritual Beggars, and Carnage, as well as a former member of the grindcore band Carcass. He is the older brother of Christopher Amott. Some major influences in his music have been Tony Iommi, Michael Schenker, Uli Jon Roth and Dave Mustaine.
Document 7: Morrissey: Steven Patrick Morrissey (born 22 May 1959), professionally known as Morrissey, is an English singer, songwriter and author. He rose to prominence as the lead singer of the indie rock band the Smiths, which was active from 1982 to 1987. Since then, Morrissey has had a solo career, making the top ten of the UK Singles Chart on ten occasions.
Document 8: Armageddon (Swedish band): Armageddon is a Swedish melodic death metal band, led by Christopher Amott of Arch Enemy.
Document 9: Crossing the Rubicon (Armageddon album): Crossing the Rubicon was an album by the Swedish melodic death metal band Armageddon, released in Europe on the now defunct W.A.R. records, and in Japan on Toy's Factory records in 1997. The album features Christopher Amott of Arch Enemy, as well as former Arch Enemy members Peter Wildoer and Martin Bengtsson. The album was only released in Japan, briefly in Europe, and is extremely hard to find.
Document 10: Stephen Malkmus (album): Stephen Malkmus is the debut album by Stephen Malkmus, released on February 13, 2001 by Matador Records. Malkmus had planned to create the record by himself, or through a smaller, local label, but eventually accepted the offer Matador asked, and he released it. Pre-release promotional CDs of the album exist under the working titles "Jicks" and "Swedish Reggae". Malkmus intended to release the album as The Jicks, but Matador insisted that the album be released under his own name. The album peaked at #124 in the US and #49 in the UK.
Document 11: J Mascis: J Mascis ( ; born Joseph Donald Mascis Jr., December 10, 1965) is an American musician, best known as the singer, guitarist and main songwriter for the alternative rock band Dinosaur Jr. He has also released several albums as a solo artist and played drums and guitar on other projects. His most recent solo album, "Tied to a Star", was released in August 2014. He was ranked number 86 in a "Rolling Stone" list of the "100 Greatest Guitarists", and number 5 in a similar list for "Spin" magazine in 2012.
Document 12: Christopher Amott: Christopher Amott (born 23 November 1977) is a Swedish guitarist and vocalist, younger brother of Michael Amott and founding member of the Swedish metal bands Arch Enemy and Armageddon.
Document 13: Arch Enemy: Arch Enemy is a Swedish melodic death metal band, originally a supergroup, from Halmstad, formed in 1996. Its members were in bands such as Carcass, Armageddon, Carnage, Mercyful Fate, Spiritual Beggars, Nevermore, and Eucharist. It was founded by Carcass guitarist Michael Amott along with Johan Liiva, who were both originally from the influential death metal band Carnage. The band has released ten studio albums, three live albums, three video albums and four EPs. The band was originally fronted by Johan Liiva, who was replaced by German Angela Gossow as lead vocalist in 2000. Gossow left the band in March 2014 and was replaced by Canadian Alissa White-Gluz, while remaining as the group's manager.
Document 14: Stephen Malkmus and the Jicks: Stephen Malkmus and the Jicks is a rock band consisting of Stephen Malkmus, Mike Clark, Joanna Bolme, and Jake Morris. Malkmus was the main singer and songwriter behind the influential 1990s indie rock band Pavement.
Document 15: Pavement (band): Pavement was an American indie rock band that formed in Stockton, California in 1989. The group mainly consisted of Stephen Malkmus (vocals and guitar), Scott Kannberg (guitar and vocals), Mark Ibold (bass), Steve West (drums) and Bob Nastanovich (percussion and vocals). Initially conceived as a recording project, the band at first avoided press or live performances, while attracting considerable underground attention with their early releases. Gradually evolving into a more polished band, Pavement recorded five full-length albums and nine EPs over the course of their decade-long career, though they disbanded with some acrimony in 1999 as the members moved on to other projects. In 2010, they undertook a well-received reunion tour.
ground_truth: yes