Question: Are Kim Jung-ah and Mary Ramsey both singers?

full_context: Document 1: Mary Ramsey: Mary Ramsey (born 24 December 1963), a resident of Buffalo, New York, is a member of folk rock duo John & Mary and lead singer and violinist for the American alternative rock band 10,000 Maniacs. Ramsey has also worked with other well-known artists such as Jackson Browne, Goo Goo Dolls, Billy Bragg, Warren Zevon, Alex Chilton and Ani DiFranco.
Document 2: Jia (singer): Meng Jia (), simply known as Jia, is a Chinese singer and actress mostly active in South Korea and China. She was a member of the JYP Entertainment's girl group Miss A. In May 2016, Jia left the group after her contract with JYP Entertainment expired. To pursue her solo activities in China, Meng Jia signed a contract with Banana Culture Music in 2016.
Document 3: Kim Chung-ha: Kim Chung-ha (born Kim Chan-mi on February 9, 1996), better known by the mononym Chungha, is a South Korean singer. She is best known for finishing fourth in Mnet's girl group survival show "Produce 101" and as a former member of the now disbanded South Korean girl group I.O.I.
Document 4: Patti Kim (singer): Patti Kim Hye-ja (born February 28, 1938 in Seoul, Korea) is a prominent South Korean pop singer. She is commonly referred to as a "Super Star" by Korean media. In 1959, one year after Kim graduated from Seoul Jungang Girls' High School, she debuted as a singer at a stage of the Eighth United States Army. In 1963, as a recommendation by composer, Park Chun-seok, Kim sang "Pledge of Love" ("Sarangui maengse"), an adapted song of "Till" and gained a popularity. In the same year, she got a chance to sing at a stage in Las Vegas, United States. With the collaboration with Gil Ok-yun, a renowned composer and her first husband, Kim announced a lot of hit songs, and albums including ""Sawori gamyeon"" (literally, Once the April is gone), ""Sarangui changa"" (Song in praise of Love), ""Saranghaneun Maria"" (Dear Maria), ""Motiteo"" (Don't forget you) which are still favored by mid aged fans. During the marriage until 1972, they produced about 70 albums, and 500 to 600 songs.
Document 5: Our Time in Eden: Our Time in Eden is the fifth studio album by American alternative rock band 10,000 Maniacs. It was released in 1992 on Elektra Records. The release is 10,000 Maniacs' last studio album with the original lead singer, Natalie Merchant. The album included her future replacement Mary Ramsey on violin and viola on such tracks as "Stockton Gala Days" and "How You've Grown". Singles released from the album were "These Are Days", "Candy Everybody Wants" and "Few and Far Between". The brass and woodwind section is covered by the J.B.'s, or James Brown's band.
Document 6: John &amp; Mary: John & Mary is a United States-based folk rock duo featuring John Lombardo and Mary Ramsey both members or former members of alternative rock band 10,000 Maniacs.
Document 7: Juniel: Choi Seo-ah (Korean: 최서아; born Choi Jun-hee on September 3, 1993) better known by her stage name Juniel (Hangul: 주니엘, often stylized as JUNIEL) is a South Korean singer-songwriter. She began her career in Japan before eventually debuting in South Korea. She was first known as 'Junie', but eventually changed her stage name to 'Juniel', which was derived from combining her name, Junie, and L for 'love'. She was also a member of the duo Romantic J with CNBLUE's Lee Jong-hyun under former label FNC Entertainment. In 2016, Juniel announced on her social media that she legally changed her native name from 최준희 (Choi Jun-hee) to 최서아 (Choi Seo-ah).
Document 8: Love Among the Ruins (album): Love Among the Ruins (1997) was the first album released by 10,000 Maniacs with their new lead singer, Mary Ramsey, after Natalie Merchant left in 1993. The two singles from the album, "More Than This" and "Rainy Day", were not originally intended to be included on the album at all. John Lombardo had just written "Rainy Day", which was deemed more radio friendly than the other songs, and the record company insisted that the band record a cover song for inclusion. The band chose to credit the songs as group collaborations so that all members would receive equal royalties. Ramsey and Lombardo shared the lyric writing. Ramsey wrote the music to "All That Never Happens". Lombardo wrote "Rainy Day", "Even with My Eyes Closed", "Big Star", "Shining Light" and "Across the Fields". Lombardo shared a writing credit with Jerry Augustyniak on "Girl on a Train". Rob Buck wrote "Love Among the Ruins", and Dennis Drew wrote "A Room For Everything". A live version was also included on their 2016 album "Playing Favorites".
Document 9: Jang Jin-young (singer): Jang Jin-young (born July 1, 1983) is a South Korean singer and the former lead singer of the boy group Black Beat. He's currently more active as a vocal trainer for S.M. Entertainment's artists, particularly SHINee, EXO and Red Velvet.
Document 10: Jessica Jung: Jessica Jung (born April 18, 1989), known professionally as Jessica, is an American singer, songwriter, actress, model, fashion designer, and businesswoman currently based in South Korea. Jung was born and raised in San Francisco, California. At the age of eleven, she was discovered by South Korean entertainment agency S.M. Entertainment and subsequently moved to South Korea. In 2007, Jung debuted as a member of the South Korean girl group Girls' Generation. The group later became one of the best-selling artists in South Korea, and one of South Korea's most popular girl groups nationwide and worldwide.
Document 11: Victory Gardens: Victory Gardens (1991) is the debut album from John & Mary, recorded in 1990 just six months after the two met in December 1989 and immediately following their signing with Rykodisc. John Lombardo, former member of 10,000 Maniacs and responsible for much of their early music, brought elements of the early Maniacs sound with him. Combined with the classically trained Mary Ramsey's blend of folk and classical influences, the album is considered by some to be heir to the 10,000 Maniacs album "The Wishing Chair" (1985), critically acclaimed for linking traditional influences with the contemporary new-wave sound.
Document 12: Extended Versions (10,000 Maniacs album): Extended Versions is a live album by 10,000 Maniacs released in 2009 as a part of the Extended Versions collection of discounted albums. The album was recorded during the band's 2006 tour with Oskar Saville as lead vocalist. By the time of the album's release, Saville had been replaced as lead vocalist by the former member Mary Ramsey who is pictured on the cover and listed as a member of the band.
Document 13: John Lombardo: John Lombardo (born 30 September 1952) was one of the founding members of the American alternative rock band 10,000 Maniacs and one of the band's most influential members, writing much of its early material. He is also a member of folk rock duo John & Mary.
Document 14: Kim Jung-ah: Kim Jung-ah (born August 2, 1983), better known by the mononym Jung Ah or Jung A, is a South Korean singer. She was a member of Kiss Five and graduated member of After School. In 2016, Pledis Entertainment announced that her contract had expired and she had graduated from After School naturally.
Document 15: Jun. K: Kim Min-jun (; born January 15, 1988), better known by his stage name Jun. K, is a South Korean singer, songwriter, record producer, rapper, dancer and actor. He is the main vocalist of 2PM.
ground_truth: yes