Question: Jack McElhone appeared in "Dear Frankie", as well as "Nowhere Boy", a biopic of which Beatle?
Context: "Roman (My Dear Boy)" (浪漫 〜MY DEAR BOY〜 , "Romance (My Dear Boy)") is the twenty-second single of idol group Morning Musume and was released May 12, 2004.  It sold a total of 87,255 copies.  The single peaked at #4 on the weekly Oricon charts, charting for six weeks. Thomas Brodie-Sangster (born 16 May 1990), also credited as Thomas Sangster, is an English actor and musician, known for his roles as Jojen Reed in "Game of Thrones", his voice as Ferb Fletcher in "Phineas and Ferb", as John Tracy in the ITV series "Thunderbirds Are Go", as well as his roles as Sam in Richard Curtis' "Love Actually" and Newt in the "Maze Runner" film series.  Sangster also grew in popularity for starring in critically acclaimed cult films such as "Death of a Superhero", "Bright Star" and as Paul McCartney in "Nowhere Boy".  He also had a cameo in the 2015 film "". Dear Frankie is a 2004 British drama film directed by Shona Auerbach and starring Emily Mortimer, Gerard Butler, and Jack McElhone.  The screenplay by Andrea Gibb focuses on a young single mother whose love for her son prompts her to perpetuate a deception designed to protect him from the truth about his father. Josh Bolt (born Joshua Ryan Bolt on 2 May 1994) is an English actor from Liverpool, England.  He played "Robbie" in the multi award winning feature film "The Be All and End All", a role which saw him shortlisted for the best newcomer at the 2009 British Indepependent Film Awards.  Josh began acting at the age of 12 when he was cast in a theatre production of "Much Ado About Nothing".  In 2009 he starred alongside Aaron Johnson and Kristin Scott Thomas playing "Pete Shotton" in the BAFTA nominated film "Nowhere Boy". Alice Normington is a British production designer known for her work on films and television series such as Nowhere Boy, The Secret World of Michael Fry, and Suffragette.  She won a BAFTA Award in 1998 for her work on the BBC television series The Woman in White.  Normington is a graduate of the Wimbledon School of Art and teaches at The London Film School. "Martha My Dear" is a song by the Beatles written by Paul McCartney (credited to Lennon–McCartney), which first appeared on the double album "The Beatles" (also known as "the White Album").  McCartney is the only Beatle to perform on the track. Samantha Louise Taylor-Johnson (née Taylor-Wood, born 4 March 1967) is an English filmmaker and photographer.  Her directorial feature film debut came in 2009 with "Nowhere Boy", a film based on the childhood experiences of the Beatles songwriter and singer John Lennon.  She is one of a group of artists known as the Young British Artists. The fifth Beatle is an informal title that various commentators in the press and entertainment industry have applied to people who were at one point a member of the Beatles, or who had a strong association with the "Fab Four" (John Lennon, Paul McCartney, George Harrison, and Ringo Starr) during the group's existence.  The "fifth Beatle" claims first appeared in the press immediately upon the band's rise to global fame in 1963–64.  The members have offered their own beliefs of the "fifth Beatle": Nowhere Boy is a 2009 British biographical musical drama film about John Lennon's adolescence, his relationships with his aunt Mimi Smith and his mother Julia Lennon, the creation of his first band, the Quarrymen, and its evolution into the Beatles.  The film is based on a biography written by Lennon's half-sister Julia Baird.  The film received its US release on 8 October 2010, coinciding with that weekend's celebrations of the 70th anniversary of Lennon's birth (9 October 1940). Jack McElhone (born 1993) is a former Scottish child and teenage actor.  He is famous for his role as Frankie in the 2004 film "Dear Frankie", for which he was nominated for a BAFTA Scotland Award.  He also had roles in "Young Adam", "The Book Group", "Stacked" and Nowhere Boy.
Answer: John Lennon