Question: ZZ Top  is an American rock band formed in 1969 in Houston, Texas. The band has, since 1970, consisted of bassist and lead vocalist Dusty Hill, guitarist and lead vocalist Billy Gibbons (the band's leader, main lyricist and musical arranger), and drummer Frank Beard. "As genuine roots musicians, they have few peers", according to former musician, critic and collector Michael "Cub" Koda. "Gibbons is one of America's finest blues guitarists working in the arena rock idiom [...] while Hill and Beard provide the ultimate rhythm section support."

The original line-up was formed in Houston and consisted of Gibbons, organist Lanier Greig (died February 2013) and drummer Dan Mitchell.  The name of the band was Gibbons' idea. The band had a little apartment covered with concert posters and he noticed that many performers' names utilized initials. Gibbons particularly noticed B.B. King and Z.Z. Hill and thought of combining the two into "ZZ King", but considered it too similar to the original name. He then figured that "king is going at the top" which brought him to "ZZ Top".  ZZ Top was managed by Bill Ham, a Waxahachie, Texas native who had befriended Gibbons a year earlier. They released their first single, "Salt Lick", in 1969, and the B-side contained the song "Miller's Farm". Both songs were credited to Gibbons. Immediately after the recording of "Salt Lick", Greig was replaced by bassist Billy Ethridge, a band-mate of Stevie Ray Vaughan, and Mitchell was replaced by Frank Beard of the American Blues. Due to lack of interest from U.S. record companies, ZZ Top accepted a record deal from London Records. Unwilling to sign a recording contract, Ethridge quit the band and Dusty Hill was selected as his replacement. After Hill moved from Dallas to Houston, ZZ Top signed with London in 1970. They performed their first concert together at the Knights of Columbus Hall in Beaumont on February 10.  In addition to assuming the role as the band's leader, Gibbons became the main lyricist and musical arranger. With the assistance of Ham and engineer Robin Hood Brians, ZZ Top's First Album (1971) was released and exhibited the band's humour, with "barrelhouse" rhythms, distorted guitars, double entendres, and innuendo. The music and songs reflected ZZ Top's blues influences. Following their debut album, the band released Rio Grande Mud (1972), which failed commercially and the promotional tour consisted of mostly empty auditoriums.

Using a quote from the above article, answer the following question: When was ZZ Top formed?
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Answer: The original line-up was formed in Houston and consisted of Gibbons, organist Lanier Greig (died February 2013) and drummer Dan Mitchell.


Question: Born as Paul Charles Caravello on July 12, 1950, to Albert and Connie Caravello, Carr was of Italian descent. He grew up in the Brownsville section of Brooklyn in New York City. Because his father worked most of the time, Carr didn't see that much of him, and "never went to a baseball game or that kind of stuff" with his father. He spent a lot of time alone in his room, playing with toy soldiers and toy monsters.

In February 1991, Carr began feeling ill. Medical tests initially revealed what appeared to be manageable health issues. However, further tests determined that he had heart cancer. In April 1991, Carr underwent a series of surgeries to remove tumors in his right atrium and lungs in an effort to restore heart function and prevent the cancer's growth. Soon after Carr's diagnosis, Paul Stanley and Gene Simmons replaced him with session drummer Eric Singer to commence new recordings for the band's upcoming album Revenge. After recovering from the multiple surgeries, Carr pressed Stanley and Simmons to let him back in the band. Stanley and Simmons refused; both have stated they repeatedly told Carr to focus on his cancer treatments and they would allow him to return to Kiss once he regained his health. By mid-1991, the band was preparing to shoot the music video for their upcoming single "God Gave Rock and Roll to You". Despite his poor health, Carr asked Stanley and Simmons to allow him to be in the video. They ultimately agreed.  Carr flew to Los Angeles in July 1991. By that point, he had lost his hair due to chemotherapy treatments and was wearing a wig. After the video shoot, Carr flew back to New York to continue cancer treatments; his health had deteriorated to the point where he was unable to play drums for the recording sessions for Revenge. Carr's replacement, Eric Singer, played on the album's tracks.  Carr's last public appearance with Kiss was at the MTV Video Music Awards in September 1991. Not long afterwards, he suffered an aneurysm and was rushed to the hospital. Several days later, he suffered a brain hemorrhage and never regained consciousness. On November 24, 1991, Carr died at the age of 41. He died on the same day as Freddie Mercury, the lead singer of the British rock band Queen, whose death attracted more media attention. Carr had also been in a nearly four-year relationship with future model/actress Carrie Stevens at the time of his death.  In keeping with Carr's accessibility to his fans, his family decided to open his funeral service to the public while reserving the interment as a private event. Carr is interred in Cedar Hill Cemetery in the town of Newburgh, New York, New York.

Using a quote from the above article, answer the following question: when did he become  ill?
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Answer:
In February 1991, Carr began feeling ill. Medical tests initially revealed what appeared to be manageable health issues.