Question: Are Eric Dover and Soyou both singers?

full_context: Document 1: Eric Burdon: Eric Victor Burdon (born 11 May 1941) is an English singer-songwriter and rocker best known as a member and vocalist of the R&B/rock band The Animals and the funk band War. He is regarded as one of the British Invasion's most distinct singers with his deep, searingly powerful blues-rock voice. He is also known for his aggressive stage performances.
Document 2: Kwon So-hyun: Kwon So-hyun (born August 30, 1994), is a South Korean singer and actress. She was known as a member of the South Korean girl group 4Minute, under Cube Entertainment. She is also a former member of the South Korean girl group, Orange. Before June 15, 2016 (end of her contract with Cube), Sohyun left 4Minute and the record label along with members Nam Ji-hyun, Heo Ga-yoon, and Jeon Ji-yoon.
Document 3: Lovey (singer): Kim Hye-soo (Korean: 김혜수) (born June 27, 1993), better known as Lovey (Korean: 러비), is a South Korean singer-songwriter. She debuted in 2013, and has been signed under Starship Entertainment since 2016. She has an elder brother who is also a singer-songwriter, Brother Su.
Document 4: Kim Ji-soo (actress): Kim Ji-soo (born Yang Sung-yoon on October 24, 1972) is a South Korean actress.
Document 5: Eric Singer Project: Eric Singer Project is an American rock band. ESP was founded in the 1990s by Eric Singer, drummer for such acts as Lita Ford, Black Sabbath, Badlands, Alice Cooper, and Kiss, along with Bruce Kulick (Kiss, Grand Funk Railroad) on guitar, John Corabi (The Scream, Mötley Crüe, Ratt) on guitar and bass, and Karl Cochran on guitar and bass. Vocals duties were shared by Eric, John, and Karl.
Document 6: Eric Bloom: Eric Bloom (born December 1, 1944) is an American singer, songwriter and musician. He is best known as a vocalist, and "stun guitar" player for the long-running band Blue Öyster Cult, with work on over 20 albums. Much of his lyrical content relates to his lifelong interest in science fiction.
Document 7: Seohyun discography: Seohyun (born Seo Joo-hyun) is a South Korean singer, member of Girls' Generation and its subgroup Girls' Generation-TTS. Since debuting in 2007, she has collaborated with various artists and released several original soundtracks for South Korean TV series. Her career as a solo singer began in January 2017 with the release of her debut extended play "Don't Say No".
Document 8: Slash's Snakepit: Slash's Snakepit was an American rock supergroup from Los Angeles, California, formed by Guns N' Roses guitarist Slash in 1993. Though often described as a solo or side project, Slash stated that Snakepit was a band with equal contributions by all members. The first lineup of the band consisted of Slash, two of his Guns N' Roses bandmates— drummer Matt Sorum and guitarist Gilby Clarke— as well as Alice in Chains bassist Mike Inez and former Jellyfish live guitarist Eric Dover on lead vocals.
Document 9: Eric Dover: Eric Dover (born January 19, 1967 in Jasper, Alabama) is an American musician, guitarist and singer, most notably with Jellyfish, Slash's Snakepit, Imperial Drag and Alice Cooper.
Document 10: Derek Sherinian: Derek Sherinian (born August 25, 1966) is an American keyboardist who has toured and recorded for Alice Cooper, Billy Idol, Yngwie Malmsteen, Kiss, Steve Vai, and Joe Bonamassa. He was also a member of Dream Theater from 1994–99, is the founder of Planet X and also one of the founding members of Black Country Communion and Sons of Apollo. He has released seven solo albums that have featured a variety of prominent guest musicians, including guitarists Slash, Yngwie Malmsteen, Allan Holdsworth, Steve Lukather, Joe Bonamassa, Billy Sheehan, Zakk Wylde and Al Di Meola.
Document 11: Soyou: Kang Ji-hyun (Hangul: 강지현 ; born February 12, 1992), better known by her stage name Soyou (소유 ), is a South Korean singer. She is best known as a former member of the South Korean girl group Sistar under Starship Entertainment.
Document 12: Hyolyn: Kim Hyo-jung (born January 11, 1991), better known by her stage name Hyolyn, is a South Korean singer-songwriter. She is best known as a former member of South Korean girl group Sistar and their sub-unit Sistar19.
Document 13: Eric Johnson: Eric Johnson (born August 17, 1954) is an American guitarist. His 1990 album "Ah Via Musicom" was certified platinum by the RIAA and the single "Cliffs of Dover" won the Grammy Award for Best Rock Instrumental Performance.
Document 14: Seohyun: Seo Ju-hyun (born June 28, 1991), known professionally as Seohyun, is a South Korean singer and actress. She debuted as a member of girl group Girls' Generation (and later its subgroup TTS) in August 2007, who went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Apart from her group's activities, she has established herself as an actress, notably through her participation in the original and Korean versions of stage musicals including "Moon Embracing the Sun", "Gone with the Wind" and "Mamma Mia". She also starred in the drama "". She debuted as a solo artist with her debut mini album, "Don't Say No", on January 17, 2017, making her the third Girls' Generation member to debut as a solo artist.
Document 15: Eric Sessler: Eric Sessler is an American composer and educator. Among his collaborations are works written for Grammy Award winner Jason Vieaux; Philadelphia Orchestra principal flutist Jeffrey Khaner; organist Alan Morrison; the Dover Quartet; and the flute & guitar duo of Bonita Boyd & Nicholas Goluses.
ground_truth: yes