Question: Who is the son of the performer of Graceland?

full_context: Document 1: Plymouth: Antarctic explorers Robert Falcon Scott and Frank Bickerton both lived in the city. Artists include Beryl Cook whose paintings depict the culture of Plymouth and Robert Lenkiewicz, whose paintings investigated themes of vagrancy, sexual behaviour and suicide, lived in the city from the 1960s until his death in 2002. Illustrator and creator of children's series Mr Benn and King Rollo, David McKee, was born and brought up in South Devon and trained at Plymouth College of Art. Jazz musician John Surman, born in nearby Tavistock, has close connections to the area, evidenced by his 2012 album Saltash Bells. The avant garde prepared guitarist Keith Rowe was born in the city before establishing the jazz free improvisation band AMM in London in 1965 and MIMEO in 1997. The musician and film director Cosmo Jarvis has lived in several towns in South Devon and has filmed videos in and around Plymouth. In addition, actors Sir Donald Sinden and Judi Trott. George Passmore of Turner Prize winning duo Gilbert and George was born in the city, as was Labour politician Michael Foot whose family reside at nearby Trematon Castle.
Document 2: Southampton: The city is home or birthplace to a number of contemporary musicians such as R'n'B singer Craig David, Coldplay drummer Will Champion, former Holloways singer Rob Skipper as well as 1980s popstar Howard Jones. Several rock bands were formed in Southampton, including Band of Skulls, The Delays, Bury Tomorrow, Heart in Hand, Thomas Tantrum (disbanded in 2011) and Kids Can't Fly (disbanded in 2014). James Zabiela, a highly regarded and recognised name in dance music, is also from Southampton.
Document 3: Maurice Simon: A high school classmate of Eric Dolphy (1945-6) Simon appears on an early 1945 Los Angeles recording in a band led by Russell "Illinois" Jacquet and which also included Teddy Edwards, Charles Mingus, Bill Davis and Chico Hamilton.
Document 4: From Graceland to the Promised Land: "From Graceland to the Promised Land" is a song written and recorded by American country music artist Merle Haggard. It was released in October 1977 as the only single from the album "My Farewell to Elvis". The song reached number 4 on the "Billboard" Hot Country Singles & Tracks chart.
Document 5: Slip Slidin' Away: "Slip Slidin' Away" is a 1977 song written and recorded by Paul Simon, from his compilation album "Greatest Hits, Etc.". It was one of two new songs to appear on the album, the other being "Stranded in a Limousine". Backing vocals on the song are provided by The Oak Ridge Boys. The song was originally recorded and considered for Simon's 1975 album "Still Crazy After All These Years", but Simon decided not to include the song on the finished album. A demo version appears on the 2004 re-issue of the album. The song was also included on "Negotiations and Love Songs" (1988).
Document 6: Menlo Park (band): It featured Harper Simon, Paul Simon's son. Also, its drummer was Seb Rochford, who won the BBC Rising Star Jazz Award in 2004 and leads the Mercury Prize-nominated experimental-jazz group Polar Bear.
Document 7: Graceland (song): "Graceland" is the title song of the album "Graceland", released in 1986 by Paul Simon. The song features vocals by The Everly Brothers.
Document 8: Joo Yeon Sir: A former pupil at the Purcell School, Joo Yeon Sir is a Scholar at the Royal College of Music, London where she studies with Dr Felix Andrievsky. She has been a major prizewinner at national and international competitions in the UK and abroad and has performed as recitalist, chamber musician and soloist with orchestras at various venues including the Wigmore Hall, London Arts Club, St James's Palace in presence of HRH Prince Charles, the Foundling Museum as part of New London Orchestra Young Performer's Concert Series supported by the MBF, and most recently at Fairfield Halls performing Vaughan Williams' The Lark Ascending.
Document 9: Simple Complex: Simple Complex is a jazz album of original compositions by Pianist Jon Weber, featuring an unusual ensemble of well-known musicians. Simple Complex was released in 2004 to international critical acclaim. The album featured Weber on piano, drummer Mark Walker, Eric Alexander on sax, trumpeters Diego Urcola and Roy Hargrove, bassists Avishai Cohen, the late Niels-Henning Ørsted Pedersen, Peter Washington and Gary Burton on vibraphone.
Document 10: Diamonds on the Soles of Her Shoes: "Diamonds on the Soles of Her Shoes" is a song by the American singer-songwriter Paul Simon. It was the fourth single from his seventh studio album, "Graceland" (1986), released on Warner Bros. Records. The song features guest vocals from the South African male choral group Ladysmith Black Mambazo.
Document 11: The Rhythm of the Saints: The Rhythm of the Saints is the eighth solo studio album by American singer-songwriter Paul Simon, released on October 16, 1990 on Warner Bros. Like its predecessor, "Graceland" (1986), the album gained commercial success and received mostly favorable reviews from critics.
Document 12: Recorded as Jerry Landis: Recorded as Jerry Landis is a compilation album of music by singer, songwriter, and guitarist Paul Simon, released in 2006. This album contains 18 songs recorded before Simon & Garfunkel released their first album, "Wednesday Morning, 3 A.M.". All songs are by Paul Simon except the song "Beat Love", which is a contemporary recording by Art Garfunkel, recorded under the name "Artie Garr". This album was released six years after an album of Simon & Garfunkel songs, from the same era, that contained a mix of Simon & Garfunkel recordings (under the name "Tom & Jerry"), and Paul Simon and Art Garfunkel songs. He recorded many of the songs on these albums under different aliases, such as "Jerry Landis", "True Taylor" and "Paul Kane".
Document 13: Simon & Garfunkel: Simon & Garfunkel were an American folk rock duo consisting of singer - songwriter Paul Simon and singer Art Garfunkel. They were one of the best - selling music groups of the 1960s and became counterculture icons of the decade's social revolution, alongside artists such as the Beatles, the Beach Boys, and Bob Dylan. Their biggest hits -- including ``The Sound of Silence ''(1964),`` Mrs. Robinson'' (1968), ``The Boxer ''(1969), and`` Bridge over Troubled Water'' (1970) -- reached number one on singles charts worldwide.
Document 14: You Can Call Me Al: "You Can Call Me Al" is a song by the American singer-songwriter Paul Simon. It was the lead single from his seventh studio album, "Graceland" (1986), released on Warner Bros. Records. Written by Simon, its lyrics follow an individual seemingly experiencing a midlife crisis. Its lyrics were partially inspired by Simon's trip to South Africa and experience with its culture.
Document 15: Sligo Jazz Project: It has featured Avishai Cohen, Rufus Reid, Paul Wertico, John Riley, Jean Toussaint, Martin Taylor, John Goldsby, Soweto Kinch, Alec Dankworth, Michael Manring, Yellow Jackets, John Taylor, Reggie Washington, Ulf Wakenius, Andreas Oberg, Anita Wardell, Dominique DiPiazza, Norma Winstone, Cleveland Watkiss, Todd Coolman and key Irish jazz musicians such as Louis Stewart, Mike Nielsen, Linley Hamilton, Michael Buckley and David Lyttle. In 2011, Sligo Jazz Project had over eighty participants from twelve different countries and offered full bursaries to four exceptional young musicians.
ground_truth: Harper Simon
sub_queries: Graceland >> performer Answer: Paul Simon
Paul Simon >> child Answer: Harper Simon