Question: Who was the father of the songwriter of the Beatles' Imagine?

full_context: Document 1: Evelyn Einstein: Einstein was born in Chicago; after her birth she was adopted by Hans Albert Einstein. Towards the end of her life, she recounted that as a child she was told she was an illegitimate daughter of Albert Einstein and a ballet dancer; however, she had no documentation supporting this claim. She obtained a Master's degree in Medieval literature at University of California, Berkeley. She was married to Grover Krantz for 13 years from 1964 to about 1977. She then worked briefly as an animal control officer, as a cult deprogrammer, and as a Berkeley, California, reserve police officer.
Document 2: Mother (John Lennon song): "Mother" is a song by English musician John Lennon, first released on his 1970 album "John Lennon/Plastic Ono Band". An edited version of the song was issued as a single in the United States on Apple Records, on 28 December 1970. The single edit runs 1:41 shorter than the album due to removing the tolling bells that start the song and a quicker fade-out. The B-side features "Why" by Yoko Ono. The song peaked in the United States at number 19 on the "Cashbox" Top 100 and number 43 on the "Billboard" Hot 100.
Document 3: Imagine (1972 film): Imagine is a 1972 television film by John Lennon and Yoko Ono, filmed mostly at their Tittenhurst Park home in Ascot, England, during 1971, and intended for television. All the songs from Lennon's "Imagine" album appear in the soundtrack, and also the songs "Mrs. Lennon" and "Don't Count the Waves", from Ono's album "Fly".
Document 4: God (John Lennon song): "God" is a song from John Lennon's first post-Beatles solo album, "John Lennon/Plastic Ono Band". The album was released on 11 December 1970 in the United States and the United Kingdom.
Document 5: Julia Lennon: Julia Lennon (née Stanley; 12 March 1914 – 15 July 1958) was the mother of English musician John Lennon, who was born during her marriage to Alfred Lennon. After complaints to Liverpool's Social Services by her eldest sister, Mimi Smith (née Stanley), she handed over the care of her son to her sister. She later had one daughter after an affair with a Welsh soldier, but the baby was given up for adoption after pressure from her family. She then had two daughters, Julia and Jackie, with John 'Bobby' Dykins. She never divorced her husband, preferring to live as the common-law wife of Dykins for the rest of her life.
Document 6: Imagine (John Lennon song): ``Imagine ''is a song written and performed by English musician John Lennon. The best - selling single of his solo career, its lyrics encourage the listener to imagine a world at peace without the barriers of borders or the divisions of religion and nationality and to consider the possibility that the whole of humanity would live unattached to material possessions.
Document 7: Julia Baird: Julia Baird (née Dykins; born 5 March 1947) is a British retired teacher and author. She is the younger half-sister of English musician John Lennon, and is the eldest daughter of his mother Julia Lennon (12 March 1914 – 15 July 1958) and John 'Bobby' Albert Dykins (1918 – December 1965). She also has an older half-sister, Ingrid Pedersen. Her younger sister is Jacqueline 'Jackie' Dykins (born 26 October 1949).
Document 8: Imagine (John Lennon album): Imagine is the second studio album by John Lennon after his departure from the Beatles. Recorded and released in 1971, the album's musical arrangements are more elaborate compared to the basic, small-group arrangements of his first album, "John Lennon/Plastic Ono Band".
Document 9: Only People (song): "Only People" is a song written by John Lennon released on his 1973 album "Mind Games". The song is included on the 2010 album, "Gimme Some Truth". "Only People" revolves around Lennon's and Ono's personal philosophy. Lennon said that it failed as a song, saying that in an interview with Playboy Magazine that "It was a good lick, but I couldn't get the words to make sense."
Document 10: Johanna von Trapp: Johanna von Trapp married Ernst Florian Winter on Easter Monday in 1948 and changed her middle name to Franziska. She had seven children: Ernst Leopold (1949–1969), Florian Stefan (1951), Johanna Maria (1952), Notburga Maria (1953), Hemma Maria (1956 ), Agathe (1957 ) and Severin (1959 ). She lived with her family – four daughters and three sons – in both the United States (West Nyack, NY) and Austria (Salzburg, Schloss Eichbuechl N.O.). With Ernst Florian, she raised her children in an organic homesteading tradition incorporating her rich European heritage into family life. She was known for her hosting, cooking and preparing feast day meals that often were shared with upwards of 50 guests. Her indomitable go-to spirit and ability to persevere through the loss of her oldest son from a car accident, showed her strength and resilience. She was known to her children as the story teller of her childhood life in the von Trapp family. Approaching life with a great sense of humor and faith, carried her throughout her life.
Document 11: All You Need Is Love: ``All You Need Is Love ''is a song by the English rock band the Beatles that was released as a non-album single in July 1967. It was written by John Lennon and credited to Lennon -- McCartney. The Beatles performed the song over a pre-recorded backing track as Britain's contribution to Our World, the first live global television link. Watched by over 400 million in 25 countries, the programme was broadcast via satellite on 25 June 1967. The song captured the utopian sentiments of the Summer of Love era and topped singles charts in Britain, the United States and many other countries.
Document 12: Jealous Guy: ``Jealous Guy ''is a song by English rock musician John Lennon from his 1971 album Imagine. Lennon began writing the song in 1968, when, as`` Child of Nature'', it was among the many songs demoed by the Beatles before they recorded their self - titled double album (also known as the ``White Album ''). The lyrics were originally inspired by a lecture given by Maharishi Mahesh Yogi in early 1968, when the Beatles attended his spiritual retreat in Rishikesh, India. In its rewritten form, the song serves as a confessional in which Lennon addresses the feelings of inadequacy that resulted in his failings as a lover and husband.
Document 13: She's Always a Woman: The song was released in 1977, following several other hits from The Stranger including ``Just the Way You Are '',`` Movin 'Out (Anthony's Song)'' and ``Only the Good Die Young ''. Musically, Joel has said that he was influenced by Gordon Lightfoot and his mellow acoustic guitar ballads. It is a love song that Joel wrote for his then wife, Elizabeth Weber. Elizabeth had taken over management of Joel's career, and was able to put his financial affairs in order after Joel had signed some bad deals and contracts. She was a tough and savvy negotiator who could`` wound with her eyes'' or ``steal like a thief '', but would`` never give in''. Because of her tough - as - nails negotiating style, many business adversaries thought she was ``unfeminine, ''but to Joel, she was always a woman. The two eventually divorced in 1982.
Document 14: Julia Murdock Smith: Julia Murdock Smith Dixon Middleton (May 1, 1831 – September 12, 1880) was an early member of the Latter Day Saint movement and the eldest surviving child and only daughter of Joseph Smith and Emma Hale Smith. She was adopted by the Smiths.
Document 15: I'm Losing You (John Lennon song): "I'm Losing You" is a song written by John Lennon and released on his 1980 album "Double Fantasy". It was completed in Bermuda in June 1980, after Lennon failed at an attempted telephone call to Yoko Ono. The song is also available on the 1982 compilation "The John Lennon Collection", the 1998 boxset "John Lennon Anthology", the one disc compilation "Wonsaponatime", the 2005 two disc compilation "" and in 2010 for the "Gimme Some Truth" album. The song was also featured in the 2005 musical "Lennon".
ground_truth: Alfred Lennon
sub_queries: who wrote the song imagine by the beatles Answer: John Lennon
John Lennon >> father Answer: Alfred Lennon