Question: Who wrote the song "When I'm Sixty-Four?

Context articles: Australia in the Junior Eurovision Song Contest
The Line (Lisa Stansfield song)
When I'm Sixty-Four
Roses of Picardy (film)
My Girlfriend (Relient K song)
Girls Around the World
Albert Ostman
Dance wit' Me
Crazier (Taylor Swift song)
Paul McCartney: Many Years from Now

The participation of Australia in the Junior Eurovision Song Contest first began in Sofia, Bulgaria, at the Junior Eurovision Song Contest 2015.
 Special Broadcasting Service (SBS) an associate member of the European Broadcasting Union (EBU) was responsible for the selection process of their participants at the 2015 and 2016 contests, with the Australian Broadcasting Corporation (ABC) taking over the country's participation from the 2017 contest.
 The first representative to participate for the nation at the 2015 contest was Bella Paige with the song "My Girls", which finished in eighth place out of seventeen participating entries, achieving a score of sixty-four points.
 Australia continued their participation at the 2016 contest, having internally selected Alexa Curtis with her song "We Are", which finished in fifth place, scoring 202 points; their best result to date.
 SBS previously broadcast every edition of the Junior Eurovision Song Contest on a broadcast delay.
 As of Junior Eurovision 2016, Australia have awarded the most points to Malta , and received the most points from Georgia .
"The Line" is a song recorded by British singer Lisa Stansfield, released as the third European single from her eponymous album (1997).
 It was written by Lisa Stansfield, Ian Devaney and Terry Gamwell, and produced by Devaney and Peter Mokran.
 The song received positive reviews from music critics.
 It was released as a single in Europe on 22 September 1997 and reached number sixty-four in the United Kingdom.
"When I'm Sixty-Four" is a song by the Beatles, written by Paul McCartney (credited to Lennon–McCartney) and released in 1967 on their album "Sgt. Pepper's Lonely Hearts Club Band".
Roses of Picardy is a 1927 British silent war film directed by Maurice Elvey and starring Lillian Hall-Davis, John Stuart and Humberston Wright.
 The title is a reference to the popular First World War song Roses of Picardy.
 It was based on the novels "The Spanish Farm" (1924) "Sixty-Four, Ninety-Four" (1925) by R.H. Mottram.
 It was made at the Cricklewood Studios in London.
"My Girlfriend" is a song by the Christian rock band Relient K, released on their self-titled first album.
 The song originally appeared as "Marilyn Manson Ate My Girlfriend" on the band's demo album, "All Work and No Play".
 The song is about Marilyn Manson eating Matt Thiessen's girlfriend.
 Thiessen wrote this song when he was 15 years old.
 Thiessen has said that he wrote it because of a female friend, who lived eight hours away in Pennsylvania, who he would talk to about many things including spiritual matters such as where God was taking them in the future.
 His friend would later turn from Christian music to Nine Inch Nails and Marilyn Manson.
 In an interview with CCM Magazine Thiessen stated "through this she changed her lifestyle [and] what she believed in."
 His friend would later be expelled from school and would be kicked out of her house and sent to a youth detention center.
 Thiessen would later state "She felt that Christianity was stupid and just this big hypocrisy.
 Being young and impressionable, I just wrote this little, stupid song, but that was the way I dealt with it—writing this song about how she got so consumed by Marilyn Manson."
"Girls Around the World" is a song by American recording artist Lloyd.
 The song features rapper Lil Wayne and was written by Lloyd, along with Dwayne Carter, Eric Barrier, and William Griffin.
 The song was produced by his production team, Big Reese and Jasper Cameron, who also produced his breakthrough hit, "You", which also featured Lil Wayne.
 The song served as the lead single for Lloyd's third studio album "Lessons in Love".
 "Girls Around the World" received positive to mixed reviews from critics, some of whom noted it as generic, and others named it as a top track from the album.
 It reached sixty-four on the "Billboard" Hot 100 and thirteen on the Hot R&B/Hip-Hop Songs chart.
 The song samples "Paid in Full" by hip hop duo Eric B. & Rakim.
 Lil Wayne's verse heavily reflects and interpolates Rakim's verse in "Paid in Full".
Albert Ostman (circa 1893 – 1975) was a Canadian prospector who reported that he was abducted by a Sasquatch and held captive for six days.
 He stated that the event took place near Toba Inlet, British Columbia in 1924.
 On August 20, 1957, police magistrate A.M. Naismith wrote an affidavit which states "...I found Mr. Ostman to be a man of sixty-four years of age; in full possession of his mental faculties.
 Of pleasant manner and with a good sense of humor.
 I questioned Mr. Ostman thoroughly in reference to the story given by Mr. Green.
 I cross-examined him and used every means to endeavor to find a flaw in either his personality or his story, but could find neither..." Albert Ostman also signed a Solemn Declaration indicating that his account of the Sasquatch story was true under oath and by virtue of the Canadian Evidence Act.
"Dance wit' Me" is a song by American singer Rick James.
 It is the opening track on James' album Throwin' Down, which was released in 1982.
 The song features Roy Ayers playing a vibes solo on the song.
 Released as the second single from Throwin' Down, it peaked at number three on the Billboard R&B Singles chart, and number sixty-four on the Hot 100.
 On the US Dance chart, "Dance wit' Me" peaked at number seven.
"Crazier" is a song by American recording artist Taylor Swift.
 The song was written by Swift and Robert Ellis Orrall and produced by Nathan Chapman with Swift's aid.
 The song was featured in both the 2009 film "" and on its .
 The song is a relaxed ballad with country qualities and lyrics that describe being in love.
 Swift performed the song as herself during a cameo in the "Hannah Montana: The Movie"; this scene was taken from the film and released as a music video for "Crazier".
 The song was premiered on Radio Disney and Disney Channel, the latter promoting the home release of the film.
 The song charting at number seventeen on the "Billboard" Hot 100, sixty-four in the Australian Singles Chart, sixty-seven in the Canadian Hot 100, and one-hundred on the UK Singles Chart.
Paul McCartney: Many Years from Now is a 1997 biography of Paul McCartney by Barry Miles.
 It is the "official" biography of McCartney and was written "based on hundreds of hours of exclusive interviews undertaken over a period of five years", according to the back cover of the 1998 paperback edition.
 The title is a phrase from McCartney's song "When I'm Sixty-Four", from the Beatles' 1967 album "Sgt. Pepper's Lonely Hearts Club Band".
 The book was first published in the United Kingdom in October 1997 by Secker & Warburg.