Question: Who is the child of the person who came up with the idea for Sgt. Pepper?

full_context: Document 1: The Beatles' rooftop concert: The Beatles' rooftop concert was the final public performance of the English rock band the Beatles. On 30 January 1969, the band, with keyboardist Billy Preston, surprised a central London office and fashion district with an impromptu concert from the roof of the headquarters of the band's multimedia corporation Apple Corps at 3 Savile Row. In a 42 - minute set, the Beatles were heard playing nine takes of five songs before the Metropolitan Police Service asked them to reduce the volume. Footage from the performance was later used in the 1970 documentary film Let It Be.
Document 2: Close At Hand: Close At Hand is the second EP by James McCartney, son of Paul and Linda McCartney. The EP was produced by David Kahne and Paul McCartney, and released on .
Document 3: The Early Beatles: "The Early Beatles" is available on compact disc as part of "The Capitol Albums, Volume 2" boxed set (catalogue number CDP 0946 3 57498 2 3), in both mono and stereo. A second CD version of "The Early Beatles" with the songs in both stereo and true mono was issued in 2014 individually and part of the Beatles "The U.S. Albums" boxed set.
Document 4: The Beatles' rooftop concert: The Beatles' rooftop concert was the final public performance of the English rock band the Beatles. On 30 January 1969, the band, with keyboardist Billy Preston, surprised a central London office and fashion district with an impromptu concert from the roof of the headquarters of the band's multimedia corporation Apple Corps at 3 Savile Row. In a 42 - minute set, the Beatles played nine takes of five songs before the Metropolitan Police asked them to reduce the volume. Footage from the performance was used in the 1970 documentary film Let It Be.
Document 5: Billy Preston: Preston is one of several people referred to as the ``Fifth Beatle ''. At one point during the Get Back sessions, John Lennon proposed the idea of having him join the band (to which Paul McCartney countered that it was difficult enough reaching agreements with four). Preston played with the Beatles for several of the Get Back sessions, some of the material from which would later be culled to make the film Let it Be and its companion album, to which he contributed organ and electric piano. Preston also accompanied the band on electric piano for its rooftop concert, the group's final public appearance. In April 1969, their single`` Get Back'' was credited to ``The Beatles with Billy Preston '', the only time such a joint credit had been given on an official Beatles - sanctioned release (as distinct from an unsanctioned reissue of some Hamburg - era recordings on which they were the backing group for Tony Sheridan). The credit was bestowed by the Beatles to reflect the extent of Preston's presence on the track; his electric piano is prominent throughout and he plays an extended solo. Preston also worked, in a more limited role, on the Abbey Road album, contributing organ to the tracks`` I Want You (She's So Heavy)'' and ``Something ''.
Document 6: The Beatles: On 25 June 1967, the Beatles performed their forthcoming single, "All You Need Is Love", to an estimated 350 million viewers on Our World, the first live global television link. Released a week later, during the Summer of Love, the song was adopted as a flower power anthem. Two months later, the group suffered a loss that threw their career into turmoil. Having been introduced to Maharishi Mahesh Yogi only the previous night in London, on 25 August they travelled to Bangor for his Transcendental Meditation retreat. Two days later, their manager's assistant, Peter Brown, phoned to inform them that Epstein, only thirty-two years old, had died. The coroner ruled the death an accidental carbitol overdose, although it was widely rumoured to be a suicide. Epstein had been in a fragile emotional state, stressed by personal troubles. His death left the group disoriented and fearful about the future. Lennon recalled: "We collapsed. I knew that we were in trouble then. I didn't really have any misconceptions about our ability to do anything other than play music, and I was scared. I thought, 'We've had it now.'"
Document 7: Bringing It All Back Home: The album's cover, photographed by Daniel Kramer with an edge - softened lens, features Sally Grossman (wife of Dylan's manager Albert Grossman) lounging in the background. There are also artifacts scattered around the room, including LPs by The Impressions (Keep on Pushing), Robert Johnson (King of the Delta Blues Singers), Ravi Shankar (India's Master Musician), Lotte Lenya (Sings Berlin Theatre Songs by Kurt Weill) and Eric Von Schmidt (The Folk Blues of Eric Von Schmidt). Dylan had ``met ''Schmidt`` one day in the green pastures of Harvard University'' and would later mimic his album cover pose (tipping his hat) for his own Nashville Skyline four years later. A further record, Françoise Hardy's EP J'suis D'accord was on the floor near Dylan's feet but can only be seen in other shots from the same photo session.
Document 8: I Saw Her Standing There: Paul McCartney -- lead vocals, bass, handclaps John Lennon -- rhythm guitar, harmony vocals, handclaps George Harrison -- lead guitar, handclaps Ringo Starr -- drums, handclaps
Document 9: Sgt. Pepper's Lonely Hearts Club Band: In August 1966, the Beatles permanently retired from touring and began a three - month holiday from recording. During a return flight to London in November, Paul McCartney had an idea for a song involving an Edwardian era military band that would eventually form the impetus of the Sgt. Pepper concept. Sessions for the album began on 24 November in Abbey Road Studio Two with two compositions inspired by their youth, ``Strawberry Fields Forever ''and`` Penny Lane'', but after pressure from EMI, the songs were released as a double A-side single and were not included on the album.
Document 10: Off the Ground (song): "Off the Ground" is a song by Paul McCartney and is from the album from the same name. The video can be seen on the DVD collection, "The McCartney Years". The video was shot by Industrial Light & Magic. Some behind the scenes footage can be seen on the out of print VHS, "Movin' On". The video features "Soggy Noodle", a short acoustic piece played as an intro which can be found as a B-side on the single release. In the US, it reached number 27 on the Adult Contemporary chart.
Document 11: Getting Closer (song): "Getting Closer" is a rock song from the Anglo-American rock band Wings, Paul McCartney's post-Beatles band. The song was released on the album "Back to the Egg".
Document 12: Close to Home (band): Close to Home was an American post-hardcore band from Cincinnati, Ohio, that was formed in 2005. They have released two EPs (three mixed, one demo) and three full-length albums, "Picture Perfect"; their major label debut, "Never Back Down", which was released on February 15, 2011; and their most recent effort, "Momentum", which was released July 31, 2012 via Artery Recordings. Close to Home has toured across the United States and Europe with bands such as Silverstein, Emery, Dance Gavin Dance, In Fear and Faith, We Came as Romans, and Eskimo Callboy. They have also participated in 2010 and 2012's Scream It Like You Mean It tours. On December 10, 2010, they signed with Artery Recordings; however this contract has been fulfilled. The band was previously managed by Outerloop Management. Close to Home is commonly depicted as CTH.
Document 13: Sgt. Pepper's Lonely Hearts Club Band: Sgt. Pepper's Lonely Hearts Club Band is the eighth studio album by English rock band the Beatles. Released on 26 May 1967 in the United Kingdom and 2 June 1967 in the United States, it was an immediate commercial and critical success, spending 27 weeks at the top of the UK albums chart and 15 weeks at number one in the US. On release, the album was lauded by the vast majority of critics for its innovations in music production, songwriting and graphic design, for bridging a cultural divide between popular music and legitimate art, and for providing a musical representation of its generation and the contemporary counterculture. It won four Grammy Awards in 1968, including Album of the Year, the first rock LP to receive this honour.
Document 14: New (Paul McCartney song): "New" is a song written by Paul McCartney. It was originally recorded by McCartney and produced by English musician Mark Ronson for McCartney's sixteenth studio album "New", and appears as the sixth track on the album. After being released early on the iTunes Store as a track available to download from "New" on 28 August 2013, the song was released as a single on 2 September 2013 and available exclusively on Amazon.com. The single's premiere on 28 August was concurrent with the official reveal of "New" on the same day. The single gained heavy airplay on Japanese radio stations, where it became a number 4 hit on the Japan Hot 100.
Document 15: The Long and Winding Road: Paul McCartney said he came up with the title ``The Long and Winding Road ''during one of his first visits to his property High Park Farm, near Campbeltown in Scotland, which he purchased in June 1966. The phrase was inspired by the sight of a road`` stretching up into the hills'' in the remote Highlands surroundings of lochs and distant mountains. He wrote the song at his farm in 1968, inspired by the growing tension among the Beatles. Based on other comments McCartney has made, author Howard Sounes writes, the lyrics can be seen as McCartney expressing his anguish at the direction his personal life was taking in the autumn of 1968, after he had separated from his fiancée Jane Asher, as well as a nostalgic look back at the Beatles' history. McCartney recalled: ``I just sat down at my piano in Scotland, started playing and came up with that song, imagining it was going to be done by someone like Ray Charles. I have always found inspiration in the calm beauty of Scotland and again it proved the place where I found inspiration. ''
ground_truth: James McCartney
sub_queries: who came up with the idea for sgt. pepper Answer: Paul McCartney
Paul McCartney >> child Answer: James McCartney