Question: What other instrument is played by the artist who plays guitar on I Wish it Would Rain Down?

full_context: Document 1: Mandolin: Mandolin has also been used in blues music, most notably by Ry Cooder, who performed outstanding covers on his very first recordings, Yank Rachell, Johnny "Man" Young, Carl Martin, and Gerry Hundt. Howard Armstrong, who is famous for blues violin, got his start with his father's mandolin and played in string bands similar to the other Tennessee string bands he came into contact with, with band makeup including "mandolins and fiddles and guitars and banjos. And once in a while they would ease a little ukulele in there and a bass fiddle." Other blues players from the era's string bands include Willie Black (Whistler And His Jug Band), Dink Brister, Jim Hill, Charles Johnson, Coley Jones (Dallas String Band), Bobby Leecan (Need More Band), Alfred Martin, Charlie McCoy (1909-1950), Al Miller, Matthew Prater, and Herb Quinn.
Document 2: Rain Fall Down: "Rain Fall Down" is a song from the Rolling Stones' 2005 album "A Bigger Bang". It was released on 5 December 2005 as the second single from the album, reaching #33 in the UK, and currently remains their last top 40 hit in the UK. The single also reached #21 on "Billboard's Hot Dance Club Play" chart on February 2006.
Document 3: Let It Rain (Eric Clapton song): ``Let It Rain ''is a song and single written and released by the British rock musician Eric Clapton of his 1970 debut studio album Eric Clapton. It is the third and last single that had been released of the album.
Document 4: Robin Blaze: The son of Peter, a professional golfer, and Christine, Robin Blaze, with his brother Mark, grew up in Shadwell, near Leeds, and was educated at Leeds Grammar School, Uppingham School, and Magdalen College, Oxford. Having made his first solo recordings as a treble with Stephen Lomas, Blaze was both a chorister and an academical clerk at Magdalen College where he recorded with the Dufay Consort. After graduating, he won a scholarship for postgraduate studies at the Royal College of Music, where he continued to study with Michael Chance and Ashley Stafford. After completing his education, he took a position as professor of Vocal Studies at the Royal College. He has also studied flute, piano, and organ.
Document 5: Eric Clapton: Clapton was born on 30 March 1945 in Ripley, Surrey, England, to 16-year-old Patricia Molly Clapton (7 January 1929 – March 1999) and Edward Walter Fryer (21 March 1920 – 15 May 1985), a 25-year-old soldier from Montreal, Quebec. Fryer shipped off to war prior to Clapton's birth and then returned to Canada. Clapton grew up believing that his grandmother, Rose, and her second husband, Jack Clapp, Patricia's stepfather, were his parents, and that his mother was actually his older sister. The similarity in surnames gave rise to the erroneous belief that Clapton's real surname is Clapp (Reginald Cecil Clapton was the name of Rose's first husband, Eric Clapton's maternal grandfather). Years later, his mother married another Canadian soldier and moved to Germany, leaving young Eric with his grandparents in Surrey.Clapton received an acoustic Hoyer guitar, made in Germany, for his thirteenth birthday, but the inexpensive steel-stringed instrument was difficult to play and he briefly lost interest. Two years later Clapton picked it up again and started playing consistently. Clapton was influenced by the blues from an early age, and practised long hours to learn the chords of blues music by playing along to the records. He preserved his practice sessions using his portable Grundig reel-to-reel tape recorder, listening to them over and over until he felt he'd got it right.In 1961, after leaving Hollyfield School in Surbiton, Clapton studied at the Kingston College of Art but was dismissed at the end of the academic year because his focus remained on music rather than art. His guitar playing was so advanced that, by the age of 16, he was getting noticed. Around this time, Clapton began busking around Kingston, Richmond, and the West End.
Document 6: Eric Clapton: After being discharged, it was recommended by doctors of Hazelden that Clapton not partake in any activities that would act as triggers for his alcoholism or stress. A few months after his discharge, Clapton began working on his next album, against doctors' orders. Working with Tom Dowd, he produced what he thought as his "most forced" album to date, Money and Cigarettes. Clapton chose the name of the album "because that's all I saw myself having left" after his first rehabilitation from alcoholism.In 1984 he performed on former Pink Floyd member Roger Waters' solo album, The Pros and Cons of Hitch Hiking, and joined the supporting tour. Since then Waters and Clapton have had a close relationship. In 2005 they performed together for the Tsunami Relief Fund. In 2006 they performed at the Highclere Castle, in aid of the Countryside Alliance, playing two set pieces of "Wish You Were Here" and "Comfortably Numb". Clapton, now a seasoned charity performer, played at the Live Aid concert at John F. Kennedy Stadium in Philadelphia on 13 July 1985, playing with Phil Collins, Tim Renwick, Chris Stainton, Jamie Oldaker, Marcy Levy, Shaun Murphy, and Donald 'Duck' Dunn. When offered a slot close to peak viewing hours, he was apparently flattered. As Clapton recovered from his addictions, his album output continued in the 1980s, including two produced with Phil Collins, 1985's Behind the Sun, which produced the hits "Forever Man" and "She's Waiting", and 1986's August.
Document 7: Hang in Long Enough: "Hang in Long Enough" is a single performed by Phil Collins and released in 1990 from the album "...But Seriously". It was the sixth and last single from the album. The song was a moderate hit, reaching the #23 spot on the U.S. "Billboard" Hot 100 and #34 on the UK Singles Chart.
Document 8: Steve Smith (American Dad!): A freshman at Pearl Bailey High School, Steve is a highly capable musician, having taken up the cello to once impress a girl. In a later episode, however, Steve says that he has been playing the cello since he was nine. Steve also plays guitar and sings, which he did as part of a band in the episode ``American Dream Factory. ''In fact, both of the songs Steve's band rehearses (`` Livin 'on the Run'' and ``Sunset Blvd ''), were originally recorded by Scott Grimes, who voices Steve. Among Steve's other talents are being able to read Elvish, use Morse code, and communicate with dolphins.
Document 9: Stevie Blacke: Born in London and raised in Ohio, Blacke grew up with the music of Eric Clapton and Pink Floyd, before he attended the Berklee College of Music to study guitar, mandolin and violin. He learned and first recorded cello during a session for a hip hop artist.
Document 10: I Wish It Would Rain: The song is one of the most melancholy in the Temptations repertoire, with lead singer David Ruffin delivering, in a pained voice, the story of a heartbroken man who wants to hide his sorrow. His woman has just left him, and he wishes that it would start raining, to hide the tears falling down his face because ``a man ai n't supposed to cry ''. Accompanying Ruffin's mourning vocal are the vocals of his bandmates (Eddie Kendricks, Melvin Franklin, Paul Williams, and Otis Williams) alongside the subdued instrumentation of The Funk Brothers studio band, and, courtesy of Whitfield, sound effects depicting the`` sunshine and blue skies'', with the sound of chirping seagulls, and the sound of thunder and rain described in the song. Producer Norman Whitfield devised much of the musical structure of the song, with former Motown artist Barrett Strong composing the song's signature piano intro on a piano with only ten working keys. Motown staff writer Roger Penzabene provided the song's lyrics.
Document 11: London: London was instrumental in the development of punk music, with figures such as the Sex Pistols, The Clash, and Vivienne Westwood all based in the city. More recent artists to emerge from the London music scene include George Michael, Kate Bush, Seal, Siouxsie and the Banshees, Bush, the Spice Girls, Jamiroquai, Blur, The Prodigy, Gorillaz, Mumford & Sons, Coldplay, Amy Winehouse, Adele, Ed Sheeran and One Direction. London is also a centre for urban music. In particular the genres UK garage, drum and bass, dubstep and grime evolved in the city from the foreign genres of hip hop and reggae, alongside local drum and bass. Black music station BBC Radio 1Xtra was set up to support the rise of home-grown urban music both in London and in the rest of the UK.
Document 12: London: London has numerous venues for rock and pop concerts, including the world's busiest arena the o2 arena and other large arenas such as Earls Court, Wembley Arena, as well as many mid-sized venues, such as Brixton Academy, the Hammersmith Apollo and the Shepherd's Bush Empire. Several music festivals, including the Wireless Festival, South West Four, Lovebox, and Hyde Park's British Summer Time are all held in London. The city is home to the first and original Hard Rock Cafe and the Abbey Road Studios where The Beatles recorded many of their hits. In the 1960s, 1970s and 1980s, musicians and groups like Elton John, Pink Floyd, David Bowie, Queen, The Kinks, The Rolling Stones, The Who, Eric Clapton, Led Zeppelin, The Small Faces, Iron Maiden, Fleetwood Mac, Elvis Costello, Cat Stevens, The Police, The Cure, Madness, The Jam, Dusty Springfield, Phil Collins, Rod Stewart and Sade, derived their sound from the streets and rhythms vibrating through London.
Document 13: I Wish It Would Rain Down: ``I Wish It Would Rain Down ''is a song by Phil Collins from his 1989 album... But Seriously, featuring lead guitar by Eric Clapton. The song was a significant chart hit in 1990, peaking at No. 3 on the Billboard Hot 100 in the United States and No. 1 on the RPM Top 100 in Canada. It also reached No. 7 on the UK Singles Chart. Collins felt that it was as close as he had ever gotten at the time to writing a blues song.
Document 14: Adult contemporary music: In 1989, Linda Ronstadt released Cry Like a Rainstorm, Howl Like the Wind, described by critics as "the first true Adult Contemporary album of the decade", featuring American soul singer Aaron Neville on several of the twelve tracks. The album was certified Triple Platinum in the United States alone and became a major success throughout the globe. The Grammy Award-winning singles, "Don't Know Much" and "All My Life", were both long-running #1 Adult Contemporary hits. Several additional singles from the disc made the AC Top 10 as well. The album won over many critics in the need to define AC, and appeared to change the tolerance and acceptance of AC music into mainstream day to day radio play.
Document 15: I Wish It Would Rain Down: ``I Wish It Would Rain Down ''is a song by Phil Collins from his 1989 album... But Seriously, featuring lead guitar by Eric Clapton. The song was a significant chart hit in 1990, peaking at No. 3 on the Billboard Hot 100 in the United States and No. 1on the RPM Top 100 in Canada. It also reached No. 7 on the UK Singles Chart. Collins felt that it was as close as he had ever gotten at the time to writing a blues song.
ground_truth: violin
sub_queries: who plays guitar on i wish it would rain down Answer: Eric Clapton
Eric Clapton >> instrument Answer: violin