Question: Who is the son of the singer-songwriter who produced the album So Beautiful or So What?

full_context: Document 1: 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 2: So Beautiful or So What: So Beautiful or So What is the twelfth solo studio album by American folk rock singer-songwriter Paul Simon. It was released on April 8, 2011, by Hear Music.
Document 3: 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 4: This Better Be Good: This Better Be Good is a compilation album by Paul Simon, issued in June 2009 on the Starbucks Entertainment record label in its Opus Collection series (catalog number OPCD-8321). The disc was exclusively available at US branches of the Starbucks stores. The tracks on this album were taken from all of Paul's solo albums (except "The Paul Simon Songbook"), up to and including the 2006 release "Surprise".
Document 5: 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 6: This Kind of Love: This Kind of Love is an album by American singer-songwriter Carly Simon, released in April 2008 by Hear Music. It is Simon's 31st album, her 24th studio album, her first album of original material since "The Bedroom Tapes" in 2000 and her most recent album to date consisting of brand new songs.
Document 7: Songs from The Capeman: Songs from The Capeman is the ninth solo studio album by Paul Simon, released in 1997. It contains Simon's own performances of songs from the Broadway musical he wrote and produced called "The Capeman" augmented by members of the original cast. The songs retell the story of Salvador Agron, who was known as the "Capeman". A departure musically from his earlier work, the album features doo-wop, rock 'n' roll and Puerto Rican rhythms and a number of songs contain explicit lyrics, a first for Simon. The stage show was a commercial flop, losing $11 million, and the album did not sell well. It peaked at #42 on the Billboard 200, the lowest chart position in Simon's career.
Document 8: 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 9: Surprise (Paul Simon album): Surprise is the eleventh solo studio album by American musician Paul Simon, released in May 2006. It peaked at #14 on the Billboard 200.
Document 10: 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 11: 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 12: There Goes Rhymin' Simon: There Goes Rhymin' Simon is the third solo studio album by American musician Paul Simon rush-released on May 5, 1973. It contains songs covering several styles and genres, such as gospel ("Loves Me Like a Rock") and Dixieland ("Take Me to the Mardi Gras"). It received two nominations at the Grammy Awards of 1974, including Best Male Pop Vocal performance and Album of the Year.
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: 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 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: So Beautiful or So What >> performer Answer: Paul Simon
Paul Simon >> child Answer: Harper Simon