Question: Do They Know It's Christmas? was the biggest selling single in the UK until the singer who worked with which lyricist took over the title in 1997?

full_context: Document 1: Do They Know It's Christmas?: "Do They Know It's Christmas?" is a song written in 1984 by Bob Geldof and Midge Ure in reaction to television reports of the 1983–85 famine in Ethiopia. It was first recorded in a single day on 25 November 1984 by Band Aid, a supergroup put together by Geldof and Ure and consisting mainly of the biggest British and Irish musical acts at the time. The single was released in the United Kingdom on 3 December 1984 and aided by considerable publicity it entered the UK Singles Chart at number one and stayed there for five weeks, becoming the Christmas number one of 1984. The record became the fastest selling single in UK chart history, selling a million copies in the first week alone and passing 3 million on the last day of 1984, on the way to becoming the biggest selling single of all time in the UK. It held this title until 1997 when it was overtaken by Elton John's "Candle in the Wind 1997", released in tribute to Princess Diana following her death. The original version of "Do They Know It's Christmas?" has sold 3.8 million copies in the UK to date.
Document 2: All Around the World (Oasis song): "All Around the World" is a song by the English rock band Oasis, written by the band's lead guitarist and principal songwriter Noel Gallagher. Released on 12 January 1998, the track peaked at number one in the UK Singles Chart; it is the longest number one single in UK history. (the single version of the track is 18 seconds longer than the album version found on "Be Here Now"). It is also the longest song ever recorded by Oasis. The single went gold in the UK. This was the last Oasis single to be released on the Creation Records label. The song also reached #15 on the Billboard Alternative Songs chart.
Document 3: Elton John: Sir Elton Hercules John, (born Reginald Kenneth Dwight; 25 March 1947), is an English singer, pianist, and composer. He has worked with lyricist Bernie Taupin as his songwriting partner since 1967; they have collaborated on more than 30 albums to date. In his five-decade career Elton John has sold more than 300million records, making him one of the best-selling music artists in the world. He has more than fifty Top 40 hits, including seven consecutive No. 1 US albums, 58 "Billboard" Top 40 singles, 27 Top 10, four No. 2 and nine No. 1. For 31 consecutive years (1970–2000) he had at least one song in the "Billboard" Hot 100. His tribute single, re-penned in dedication to the late Princess Diana, "Candle in the Wind 1997" sold over 33million copies worldwide and is the best-selling single in the history of the UK and US singles charts. He has also composed music, produced records, and has occasionally acted in films. John owned Watford Football Club from 1976 to 1987, and 1997 to 2002. He is an honorary Life President of the club, and in 2014 had a stand named after him at the club's home stadium.
Document 4: Elton John singles discography: The singles discography of British musician/singer-songwriter Elton John consists of 133 official singles and 17 as featured artist, as well as 47 other non-single guest appearances. Across his career, John has yielded 57 top 40 hits in the United States, only second to Elvis Presley in total, with 27 of those hitting the top ten and 9 achieving number-one. In his native United Kingdom, he has accumulated 69 top 40 singles, including 32 top tens and 7 number-ones. In 1997, John released the double A-side single "Something About the Way You Look Tonight"/"Candle in the Wind 1997" in dedication to the memory of Diana, Princess of Wales. It subsequently hit number-one in every country that it charted in and became the biggest selling single of all-time since the UK and US charts began in the 1950s, with sales of 33 million. John has sold 100 million singles worldwide.
Document 5: We Are the World: "We Are the World" is a song and charity single originally recorded by the supergroup United Support of Artists (USA) for Africa in 1985. It was written by Michael Jackson and Lionel Richie (with arrangements by Michael Omartian) and produced by Quincy Jones for the album "We Are the World". With sales in excess of 20 million copies, it is one of the fewer than 30 all-time physical singles to have sold at least 10 million copies worldwide.
Document 6: Rocket Man (song): "Rocket Man" (officially titled as Rocket Man (I Think It's Going to Be a Long, Long Time)), is a song composed by Elton John and Bernie Taupin and originally performed by John. The song first appeared on John's 1972 album "Honky Château" and became a hit single, rising to No. 2 in the UK and No. 6 in the US. On 21 October 2016, the song was certified Silver by the British Phonographic Industry for sales of 200,000 digital downloads.
Document 7: Cliff Richard: Sir Cliff Richard {'1': ", '2': ", '3': 'OBE', '4': "} (born Harry Rodger Webb, 14 October 1940) is a British pop singer, musician, performer, actor and philanthropist. Richard has sold more than 250 million records worldwide. He has total sales of over 21 million singles in the United Kingdom and is the third-top-selling artist in UK Singles Chart history, behind the Beatles and Elvis Presley.
Document 8: Bob Geldof: Robert Frederick Zenon "Bob" Geldof, KBE (born 5 October 1951), is an Irish singer-songwriter, author, political activist and occasional actor. He rose to prominence as the lead singer of the Irish rock band The Boomtown Rats in the late 1970s and early 1980s, alongside the punk rock movement. The band had Number One hits with his compositions "Rat Trap" and "I Don't Like Mondays". He co-wrote "Do They Know It's Christmas?", one of the best-selling singles of all time, and starred in Pink Floyd's 1982 film "Pink Floyd – The Wall" as "Pink."
Document 9: Bernie Taupin: Bernard John Taupin (born 22 May 1950) is an English lyricist, poet, and singer, best known for his long-term collaboration with Elton John, writing the lyrics for the majority of the star's songs, and making his lyrics some of the best known in music history.
Document 10: Lennon–McCartney: Lennon–McCartney was the songwriting partnership between English musicians John Lennon (9 October 19408 December 1980) and Paul McCartney (born 18 June 1942) of the Beatles. It is one of the best known and most successful musical collaborations in history, with the Beatles selling over 600 million records, tapes and CDs as of 2004. Between 1962 and 1969, the partnership published approximately 180 jointly credited songs, of which the vast majority were recorded by the Beatles, forming the bulk of their catalogue.
Document 11: List of best-selling singles: According to "Guinness World Records", "White Christmas" (1942) by Bing Crosby is the best-selling single worldwide, with estimated sales of over 50 million copies. The song recognized as "the best-selling single of all time" was released before the pop/rock singles-chart era and "was listed as the world's best-selling single in the first-ever "Guinness Book of Records" (published in 1955) and—remarkably—still retains the title more than 50 years later." "Guinness World Records" states that double A-side charity single "Candle in the Wind 1997"/"Something About the Way You Look Tonight" (1997) by Elton John, a tribute to the late Diana, Princess of Wales, is "the biggest-selling single since UK and US singles charts began in the 1950s, having accumulated worldwide sales of 33 million copies," making it the second-best-selling single of all time.
Document 12: I Should Have Known Better (Jim Diamond song): "I Should Have Known Better" was a UK number one single for one week in December 1984 for Jim Diamond. The song was displaced after one week by Frankie Goes to Hollywood's song "The Power of Love". Diamond publicly requested that people not buy his single, but instead buy "Do They Know It's Christmas?"
Document 13: Somos El Mundo 25 Por Haiti: "Somos El Mundo 25 Por Haiti" is a 2010 song and charity single recorded by the Latin supergroup Artists for Haiti and written by Emilio Estefan and his wife Gloria Estefan. It is a Spanish remake of the 1985 hit song "We Are the World", which was written by American musicians Michael Jackson and Lionel Richie, and was recorded by USA for Africa to benefit famine relief in Africa.
Document 14: We Are the World 25 for Haiti: "We Are the World 25 for Haiti" is a charity single recorded by the supergroup Artists for Haiti in 2010. It is a remake of the 1985 hit song "We Are the World", which was written by American musicians Michael Jackson and Lionel Richie, and was recorded by USA for Africa to benefit famine relief in Africa. Initially, in late 2009, it had been suggested to Richie and Quincy Jones—producer of the original "We Are the World"—that a re-cut version of the song be re-released under the title "Live 25". Following the magnitude 7.0 M earthquake in Haiti, which devastated the area and killed thousands of people, it was agreed that the song would be re-recorded by new artists, in the hope that it would reach a new generation and help benefit the people of Haiti.
Document 15: Have You Ever (S Club 7 song): "Have You Ever" was a single released by UK pop group S Club 7 on 19 November 2001. Following the success of the 2000 "Children in Need" track, "Never Had a Dream Come True", the BBC asked S Club 7 to perform the 2001 track for the charity too. "Have You Ever" was co-written by Cathy Dennis, A. Frampton and Chris Braide. The track is the penultimate ballad S Club 7 released as a single with lead vocals coming from singer Jo. "Have You Ever" acted as an introduction to S Club 7's third album "Sunshine". The single entered the UK Singles Chart at number one on 25 November 2001, and remained on the chart for 14 weeks (seven of which were in the top 10). The Children in Need version of "Have You Ever" is listed in the "Guinness Book of World Records" as having the highest number of people's voices recorded in a single song; as recordings from children in schools across the UK were used in the chorus. The song has sold 380,000 copies in the UK according to the Official UK Charts Company. The photo for the cover of the single was shot in another major architectural landmark of the Los Angeles area - the Sheats Goldstein Residence near Beverly Hills.
ground_truth: Bernie Taupin