Question: Are Poly Styrene and Justin Currie both Scottish singers?

full_context: Document 1: Justin Currie: Justin Robert Currie (born 11 December 1964) is a Scottish singer and songwriter, best known as a founding member of the band Del Amitri and, along with Iain Harvie, is one of only two members of the group to be present throughout its entire existence.
Document 2: Lower Reaches: Lower Reaches is the third solo album by singer/songwriter Justin Currie, best known for his involvement in the band Del Amitri.
Document 3: PJ Harvey: Polly Jean Harvey MBE (born 9 October 1969) known as PJ Harvey, is an English musician, singer-songwriter, writer, poet, and composer. Primarily known as a vocalist and guitarist, she is also proficient with a wide range of instruments.
Document 4: Iain Harvie: Iain Wallace Harvie (born 19 May 1962 in Glasgow, Scotland) is the guitarist with the Scottish rock band Del Amitri. Along with lead singer and bassist Justin Currie, Harvie is one of only two members to be present throughout Del Amitri's history since its 1982 inception. He is also the co-writer, with Currie, of many of the group's songs.
Document 5: Siouxsie Sioux: Susan Janet Ballion, better known by her stage name Siouxsie Sioux (/ˈsuːziː suː/ , born 27 May 1957), is an English singer, songwriter, musician and producer. She is best known as the lead singer of the alternative rock band Siouxsie and the Banshees (1976–1996) and the drums-and-voice duo the Creatures (1981–2005). Siouxsie and the Banshees released 11 studio albums and several UK Top 20 singles including "Hong Kong Garden", "Happy House", "Peek-a-Boo", plus a US Billboard Top 25 hit "Kiss Them for Me". With the Creatures, Siouxsie recorded four studio albums and the hit single "Right Now". She has also sung with artists such as Morrissey and John Cale. After disbanding the Creatures in the mid-2000s, she has continued as a solo artist and released "Mantaray" in 2007.
Document 6: Janie Jones: Marion Mitchell (born 1941 in Seaham, County Durham), better known by her stage name, Janie Jones, was an English singer. She became renowned for holding sex parties at her home during the 1970s, and was jailed for her involvement in 'controlling prostitutes'. She first achieved notoriety in August 1964, when she attended the film premiere of "London in the Raw", wearing a topless dress.
Document 7: Poly Styrene: Marianne Joan Elliott-Said (3 July 1957 – 25 April 2011), known by the stage name Poly Styrene, was a British musician, singer-songwriter, and frontwoman for the punk rock band X-Ray Spex.
Document 8: The Great War (album): The Great War is the second solo album by singer/songwriter Justin Currie, best known for his involvement in the band Del Amitri.
Document 9: Del Amitri discography: The discography of Del Amitri, a Scottish pop rock band formed in 1983, includes six studio albums, one live album, two compilation and 19 singles. Four of their studio albums reached the top 10 in the UK Albums Chart. Their first album, which is a self-title album released in May 1985 did not enter the UK Albums Chart at all, and their final studio album "Can You Do Me Good?", released in 2002, peaked at number 13. The band's most successful studio album was their third "Change Everything", which reached second place in the UK Albums Chart. Also the band's compilation album, "Hatful of Rain: The Best of Del Amitri", got to fifth place in the UK Albums Chart. The band broke up in 2002. They played a reunion gig at The Hydro Glasgow on 24 January 2014. A live album, "Into the Mirror", recorded on the reunion tour in January and February 2014 was released on 20 October 2014.
Document 10: Dusty Springfield: Mary Isobel Catherine Bernadette O'Brien, (16 April 1939 – 2 March 1999), better known as Dusty Springfield, was an English pop singer and record producer whose career extended from the late 1950s to the 1990s. With her distinctive sensual mezzo-soprano sound, she was an important blue-eyed soul singer and at her peak was one of the most successful British female performers, with six top 20 singles on the US "Billboard" Hot 100 and sixteen on the UK Singles Chart from 1963 to 1989. She is a member of the US Rock and Roll and UK Music Halls of Fame. International polls have named Springfield among the best female rock artists of all time. Her image, supported by a peroxide blonde bouffant hairstyle, evening gowns, and heavy make-up, as well as her flamboyant performances made her an icon of the Swinging Sixties.
Document 11: Patti Smith: Patricia Lee Smith (born December 30, 1946) is an American singer-songwriter, poet, and visual artist who became an influential component of the New York City punk rock movement with her 1975 debut album "Horses".
Document 12: Translucence (Poly Styrene album): Translucence is a 1981 post-punk album by Poly Styrene.
Document 13: Del Amitri: Del Amitri is a Scottish alternative rock band, formed in Glasgow, Scotland in 1983. The band grew out of Justin Currie's Jordanhill College School band and came together after a teenaged Currie placed an advertisement in the window of a music store asking for people who could play to contact him. The band was formed with the original line-up of Currie (bass and vocals), Iain Harvie (lead guitar), Bryan Tolland (guitar) and Paul Tyagi (drums). Currie and Harvie were the only members of the band to remain present throughout its history. They were also the main songwriters of the group.
Document 14: Justine Frischmann: Justine Elinor Frischmann (born 16 September 1969) is an English artist and former musician, best known for being the lead singer of the Britpop band Elastica. She is now pursuing a career as a painter.
Document 15: What Is Love For: What is Love For is the first solo album by singer/songwriter Justin Currie, best known for his involvement in the band Del Amitri.
ground_truth: no