Question: What group, that spent 27 weeks at the top of the UK albums chart in 1967, featured Albert Stubbins on the cover of their album?

full_context: Document 1: The Yellow Album: The Yellow Album is "The Simpsons" second album of originally recorded songs, released as a follow-up to the 1990 album "The Simpsons Sing the Blues". Though it was released in 1998, it had been recorded years earlier, after the success of the first album. The title is a play on the name of The Beatles' highly popular self-titled 1968 album, commonly known as ""The White Album"", with the skin color of the characters of "The Simpsons". In addition, the cover is a parody of The Beatles' 1967 album, "Sgt. Pepper's Lonely Hearts Club Band".
Document 2: Sgt. Pepper's Lonely Hearts Club Band (song): "Sgt. Pepper's Lonely Hearts Club Band" is a song written by Paul McCartney (credited to Lennon–McCartney), and first recorded and released in 1967, on the album of the same name by the Beatles. The song appears twice on the album: as the opening track (segueing into "With a Little Help from My Friends"), and as "Sgt. Pepper's Lonely Hearts Club Band (Reprise)", the penultimate track (segueing into "A Day in the Life"). As the title song, the lyrics introduce the fictional band that performs on the album.
Document 3: Sgt. Pepper's Lonely Hearts Club Band (film): Sgt. Pepper's Lonely Hearts Club Band is a 1978 American musical comedy film directed by Michael Schultz and written by Henry Edwards. The film tells the loosely constructed story of a band as they wrangle with the music industry and battle evil forces bent on stealing their instruments and corrupting their home town of Heartland. The film is presented in a form similar to that of a rock opera, with the songs providing "dialogue" to carry the story. Only George Burns has spoken lines that act to clarify the plot and provide further narration.
Document 4: Stuart Sutcliffe: Stuart Fergusson Victor Sutcliffe (23 June 1940 – 10 April 1962) was a British painter and musician best known as the original bass guitarist for the Beatles. Sutcliffe left the band to pursue his career as a painter, having previously attended the Liverpool College of Art. Sutcliffe and John Lennon are credited with inventing the name, "Beetles", as they both liked Buddy Holly's band, the Crickets. The band used this name for a while until Lennon decided to change the name to "the Beatles", from the word "beat". As a member of the group when it was a five-piece band, Sutcliffe is one of several people sometimes referred to as the "Fifth Beatle."
Document 5: The Beatles (album): The Beatles, also known as the White Album, is the ninth studio album by English rock group the Beatles, released on 22 November 1968. A double album, its plain white sleeve has no graphics or text other than the band's name embossed, which was intended as a direct contrast to the vivid cover artwork of the band's earlier "Sgt. Pepper's Lonely Hearts Club Band". Although no singles were issued from "The Beatles" in Britain and the United States, the songs "Hey Jude" and "Revolution" originated from the same recording sessions and were issued on a single in August 1968. The album's songs range in style from British blues and ska to tracks influenced by Chuck Berry and by Karlheinz Stockhausen.
Document 6: Ringo Starr: Richard Starkey, {'1': ", '2': ", '3': ", '4': "} (born 7 July 1940), known professionally as Ringo Starr, is an English drummer, singer, songwriter and actor who gained worldwide fame as the drummer for the Beatles. He occasionally sang lead vocals, usually for one song on an album, including "With a Little Help from My Friends", "Yellow Submarine", "Good Night", and their cover of "Act Naturally". He also wrote the Beatles' songs "Don't Pass Me By" and "Octopus's Garden", and is credited as a co-writer of others, including "What Goes On" and "Flying".
Document 7: Albert Stubbins: Albert Stubbins (17 July 1919 – 28 December 2002) was an English footballer. He played in the position of centre forward, although his career was limited by the onset of World War II. He gained most of his fame and success playing for Liverpool where he won the League Championship in 1947. His later claim to fame was an appearance on the front cover of The Beatles' "Sgt. Pepper's Lonely Hearts Club Band" album.
Document 8: Stuart Sutcliffe: Stuart Fergusson Victor Sutcliffe (23 June 1940 – 10 April 1962) was a British painter and musician best known as the original bass guitarist for the Beatles. Sutcliffe left the band to pursue his career as a painter, having previously attended the Liverpool College of Art. Sutcliffe and John Lennon are credited with inventing the name, "Beetles", as they both liked Buddy Holly's band, the Crickets. The band used this name for a while until Lennon decided to change the name to "the Beatles", from the word "beat". As a member of the group when it was a five-piece band, Sutcliffe is one of several people sometimes referred to as the "Fifth Beatle."
Document 9: Fifth Beatle: 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":
Document 10: The Beatles: The Beatles were an English rock band formed in Liverpool in 1960. With members John Lennon, Paul McCartney, George Harrison and Ringo Starr, they became widely regarded as the foremost and most influential act of the rock era. Rooted in skiffle, beat and 1950s rock and roll, the Beatles later experimented with several musical styles, ranging from pop ballads and Indian music to psychedelia and hard rock, often incorporating classical elements and unconventional recording techniques in innovative ways. In 1963 their enormous popularity first emerged as "Beatlemania", and as the group's music grew in sophistication in subsequent years, led by primary songwriters Lennon and McCartney, they came to be perceived as an embodiment of the ideals shared by the counterculture of the 1960s.
Document 11: 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 12: The Beatles in Hamburg: The Beatles members John Lennon, Paul McCartney, George Harrison, Stuart Sutcliffe and Pete Best regularly performed at different clubs in Hamburg, Northern Germany, during the period from August 1960 to December 1962; a chapter in the group's history which honed their performance skills, widened their reputation, and led to their first recording, which brought them to the attention of Brian Epstein.
Document 13: Albert Warburton: Squire Albert Warburton (26 January 1856 – 24 November 1925) was an English footballer in the Victorian era, born in Oldham, Lancashire. "Squire" was not a title but his actual first name, although he was known by his middle name.
Document 14: Help! (album): Help! is the fifth studio album by English rock band the Beatles, the soundtrack from their film "Help!", and released on 6 August 1965. Produced by George Martin, it was the fifth UK album release by the band, and contains fourteen songs in its original British form. Seven of these, including the singles "Help!" and "Ticket to Ride", appeared in the film and took up the first side of the vinyl album. The second side contained seven other releases including the most-covered song ever written, "Yesterday".
Document 15: Sgt. Pepper's (Big Daddy album): Sgt. Pepper's is a tribute album consisting of covers of the entirety of Sgt. Pepper's Lonely Hearts Club Band by The Beatles. The album was recorded by Big Daddy in 1992 and features covers which combine the lyrics and some musical elements from the original Beatles versions with stylistic elements of certain genres and musicians, mostly ones popularized in the 1920s-1950s. The album's release coincided with the 25th anniversary of the original Beatles album. It was the band's last album until 2013's "Smashing Songs of Stage and Screen".
ground_truth: The Beatles