Question: Which singer-songwriter is known as Mr. Biggs, Joe Elliott or Ronald Isley?

full_context: Document 1: Otis Williams: Otis Williams (born Otis Miles Jr.; October 30, 1941) is an American baritone singer. Nicknamed "Big Daddy", he is occasionally also a songwriter and a record producer. Williams is best known as the founder and last original surviving member of the Motown vocal group The Temptations, a group in which he continues to perform. He also owns the rights to the Temptations name.
Document 2: Brian Johnson: Brian Francis Johnson (born 5 October 1947) is an English singer and songwriter. In 1980, he became the third lead singer of the Australian rock band AC/DC, after the death of their second lead singer Bon Scott. He and the rest of the band were inducted into the Rock and Roll Hall of Fame in 2003. In March 2016, Johnson stepped down from touring on the Rock or Bust World Tour due to hearing problems. On 20 May 2016, Johnson stated in an interview "I've had a pretty good run" in AC/DC and implied that he might not be returning by saying "I'm just thankful, really, that I came out of it in one piece."
Document 3: Ian Gillan: Ian Gillan (born 19 August 1945) is an English singer and songwriter. He originally found commercial success as the lead singer and lyricist for Deep Purple.
Document 4: Joe Strummer: John Graham Mellor (21 August 1952 – 22 December 2002), known by his stage name Joe Strummer, was an English musician, singer, actor and songwriter who was the co-founder, lyricist, rhythm guitarist and lead vocalist of the Clash, a punk rock band formed in 1976 as part of the original wave of British punk.
Document 5: Joe Lynn Turner: Joe Lynn Turner (born Joseph Arthur Mark Linquito, August 2, 1951) is an American singer, guitarist, songwriter, and producer. He is known for his work in the hard rock bands Rainbow and Deep Purple. During his career, Turner fronted and played guitar with pop rock band Fandango in the late 1970s; and in the early 80s, he became a member of Rainbow, fronting the band and writing songs with guitarist, Ritchie Blackmore and bassist, and producer, Roger Glover. After Rainbow had disbanded (the first time) in March 1984, he pursued a solo career, released one album, Rescue You, and then later did session work, singing background vocals for the likes of Billy Joel, Cher, and Michael Bolton. On the advice of Bolton, Turner began recording jingles for radio and television. Other songs he had composed or through collaboration with songwriters like Desmond Child and Jack Ponti were being recorded and released by international recording artists Jimmy Barnes, Lee Aaron, and Bonfire. Turner had a short-lived association with neoclassical metal guitarist Yngwie Malmsteen and then Deep Purple. From the mid-1990s, he resumed his solo career, releasing an additional nine studio and two live recordings. Turner did other session work, appearing as lead vocalist on tribute albums and working on projects involving various musical groups including progressive rock band Mother's Army; Bulgarian hard rock band Brazen Abbot; funk rock duo Hughes Turner Project; and classic rock/ progressive rock band Rated X. In 2006, Frontiers Records approached Turner to become involved with the AOR side project Sunstorm. By 2016, four albums under the Sunstorm name had been released. That same year, Turner released "The Sessions" via Cleopatra Records featuring a veritable who's who of classic rock royalty as guest musicians, before resuming his seemingly constant touring schedule back in Europe
Document 6: Joe Elliott: Joseph Thomas Elliott Jr. (born 1 August 1959) is an English singer-songwriter and musician, best known as the lead singer of the English rock band Def Leppard. He has also been the lead singer of the David Bowie tribute band the Cybernauts and the Mott the Hoople cover band Down 'n' Outz. He is one of the two original members of Def Leppard and one of the three to perform on every Def Leppard album.
Document 7: Masterpiece (The Isley Brothers album): Masterpiece is the 23rd album released by The Isley Brothers on Warner Bros. Records on April 29, 1985. For the first time since 1973, the Isley Brothers were a trio composed of the original members O'Kelly, Rudolph and Ronald Isley. It was the last album with O'Kelly Isley; he died a year after the album's release from a heart attack. The album is dedicated to their late brother Vernon Isley and their parents Sally & O'Kelly Isley Sr. The album liner notes were written by Elaine Isley.
Document 8: Ian Hunter (singer): Ian Hunter Patterson (born 3 June 1939), known as Ian Hunter, is a British singer-songwriter who is best known as the lead singer of the English rock band Mott the Hoople, from its inception in 1969 to its dissolution in 1974, and at the time of its 2009 and 2013 reunions. Hunter was a musician and songwriter before joining Mott the Hoople, and continued in this vein after he left the band. He embarked on a solo career despite ill health and disillusionment with commercial success, and often worked in collaboration with Mick Ronson, David Bowie's sideman and arranger from the "Ziggy Stardust and the Spiders from Mars" period.
Document 9: Eternal (The Isley Brothers album): Eternal is the 28th album released by The Isley Brothers on DreamWorks Records on August 7, 2001. Now popular again with audiences, almost single-handledly for Ronald Isley's "Mr. Biggs" persona, "Eternal" included production from not only R. Kelly who gave the Isleys their biggest hit as leading artists in over two decades with "Contagious" but also from Jimmy Jam & Terry Lewis, Raphael Saadiq and Ronald's wife at the time, Angela Winbush. Based on the mega-success of "Contagious", "Eternal" peaked at #3 on the "Billboard" Billboard Top 200 album charts and #1 on the R&B album chart selling over two million copies having it certified double-platinum. The first album the Isleys released as a duo in over a decade (Marvin Isley left the group after suffering a bout with diabetes, which later caused both of his legs to be amputated), Ernie Isley also showcase his talents as a guitarist in songs like "Move Your Body" and the aptly titled "Ernie's Jam" while Ronald was still as vocally strong on this album as he had been throughout the Isley Brothers' legendary catalogue.
Document 10: Joe Jewell: "Joe Jewell is the Dublin-born lead guitarist of Irish band Aslan. His career of over twenty-five years has been characterized by numerous successes on the Irish charts. He co-wrote many of the band's finest songs including "Crazy World", "This Is", "Where's The Sun?", "Hurt Sometimes" to name but a few. He also wrote the memorable riffs behind the songs and is the falsetto backing vocalist behind Christy Dignam in the band. He was also in The Precious Stones during the band's split and sang vocals most notably on "Jesus Says He Loves Me" which was originally intended to be on Aslan's original second album.
Document 11: David Bowie: David Robert Jones (8 January 1947 – 10 January 2016), known professionally as David Bowie ( ), was an English singer, songwriter and actor. He was a leading figure in popular music for over five decades, acclaimed by critics and other musicians for his innovative work. His career was marked by reinvention and visual presentation, his music and stagecraft significantly influencing popular music. During his lifetime, his record sales, estimated at 140 million albums worldwide, made him one of the world's best-selling music artists. In the UK, he was awarded nine platinum album certifications, eleven gold and eight silver, releasing eleven number-one albums. In the US, he received five platinum and nine gold certifications. He was inducted into the Rock and Roll Hall of Fame in 1996.
Document 12: Mission to Please: Mission to Please is the 27th album by The Isley Brothers, released on May 14, 1996, on Island Records. It was a return to commercial glory for the group in the years following their platinum-certified album "Between the Sheets" (1983). Mission to Please also went platinum based on the strength of the charted singles "Let's Lay Together," a new duet with R. Kelly after the success of "Down Low (Nobody Has to Know)" (1995); the Babyface-composed ballad "Tears"; "Floatin' on Your Love," featuring Angela Winbush (Ronald Isley and she were married from 1993 to 2002); and the mid-'90s quiet-storm radio staple "Mission to Please You." Some of the album's success was due to Ronald Isley cultivating a new image as the character of "Mr. Biggs" in a series of R. Kelly videos, starting with "Down Low," helping to introduce the music of the Isley Brothers to a new generation of R&B fans. "Mission to Please" is the last Isley Brothers album to feature youngest brother Marvin Isley, who left the group in 1997 because of complications from diabetes; he died on June 6, 2010. "Mission to Please" also helped relaunch the Isley Brothers' label, T-Neck Records.
Document 13: Ronald Isley: Ronald Isley ( ; born May 21, 1941) also known as Ron Isley and Mr. Biggs, is an American recording artist, songwriter, record producer, and occasional actor. Isley is best known as the lead singer and founding member of the family music group the Isley Brothers.
Document 14: Lou Rawls: Louis Allen Rawls (December 1, 1933 – January 6, 2006) was an American recording artist, voice actor, songwriter, and record producer. He is best known for his singing ability; Frank Sinatra once said that Rawls had "the classiest singing and silkiest chops in the singing game". Rawls released more than 60 albums, sold more than 40 million records, and had numerous charting singles, most notably his song "You'll Never Find Another Love Like Mine". He worked as a television, motion picture, and voice actor. He was also a three-time Grammy-winner, all for Best Male R&B Vocal Performance.
Document 15: Baby Makin' Music: Baby Makin' Music is the 30th studio album released by The Isley Brothers on the Def Soul Classics imprint on May 9, 2006. Their first for the Def Jam-affiliated label, the album peaked at No. 5 on the album charts based on the R&B chart success of the first single, "Just Came Here to Chill", and the R. Kelly duet, "Blast Off", which is the only collaboration with Kelly on the album, after single-handedly producing their last album, "Body Kiss". Other producers included Gordon Chambers, Jermaine Dupri, Tim & Bob and Manuel Seal. Except for two songs ("Forever Mackin'" and the suggestive "Give It to You"), much of this album is dedicated in love to Ronald Isley's new wife, Kandy Johnson, of his background singing group, JS (Johnson Sisters). He even steadfastly claims in "Just Came Here to Chill" that he's not into playing the Mr. Biggs part and he's "just Ronald Isley" while the couple decided to spend time together at home. The album closer, "You Help Me Write This Song", which was co-written by Isley, was played at his and Johnson's September 2005 wedding.
ground_truth: Ronald Isley