Problem: Background: Darrell Lance Abbott (August 20, 1966 - December 8, 2004), also known as Dimebag Darrell and Diamond Darrell, was an American musician and songwriter who was a co-founder of Pantera alongside his brother Vinnie Paul, and founder of Damageplan. He was considered to be one of the driving forces behind groove metal. Abbott was shot and killed by a gunman while on stage during a performance with Damageplan on December 8, 2004, at the Alrosa Villa in Columbus, Ohio. He ranked No. 92 in Rolling Stone magazine's 100 Greatest Guitarists and No. 1 in the UK magazine Metal Hammer.
Context: On December 8, 2004, during the Devastation Across The Nation tour, Abbott was shot on-stage while performing with Damageplan at the Alrosa Villa in Columbus, Ohio. A crowd of approximately 250 had watched four support acts (two local bands entitled Volume Dealer and 12 Gauge, and the tour support Shadows Fall and The Haunted). Moments into Damageplan's set, 25-year-old former Marine Nathan Gale shot Abbott five times in the head with a 9 mm Beretta 92F pistol. Some in attendance initially believed the shooting was part of the act, but as Gale continued shooting, the audience quickly came to the realization that the event was not staged. Firing a total of 15 shots, Gale killed three other people and wounded seven more. Jeff "Mayhem" Thompson, the band's head of security, was killed tackling Gale, as was Alrosa Villa employee Erin Halk. Audience member Nathan Bray was killed while trying to perform CPR on Abbott and Thompson. It was rumored that one crowd member leapt in front of the gunman, saving the lives of several band members. Damageplan's drum technician, John "Kat" Brooks, was shot three times as he attempted to disarm Gale, but was overpowered and taken hostage in a headlock hold. Tour manager Chris Paluska was also injured. Responding within three minutes to a dispatch call made at 10:15pm, seven police officers entered through the front entrance and moved toward the stage. Officer James Niggemeyer came in through the back door, behind the stage. Gale only saw the officers in front of the stage; he did not see Niggemeyer, who was armed with a 12 gauge Remington 870 shotgun. Niggemeyer approached Gale from the opposite side of the stage past a group of security guards, and saw Gale lift his gun to Brooks' head, and fired a single shot as Gale noticed him. Gale was struck in the face with eight of the nine buckshot pellets and was killed instantly. Gale was found to have had 35 rounds of ammunition remaining. Two fans, including Mindy Reece, a certified nurse, administered CPR on Abbott until paramedics arrived, but were unable to revive him and he was pronounced dead at the scene. Early speculation about motive suggested that Gale, who was a Pantera fan, might have turned to violence in response to the breakup of the band, or the public dispute between Abbott and Pantera singer Phil Anselmo, but these were later ruled out by investigators. In VH1's documentary, Behind the Music, Damageplan's sound engineer Aaron Barnes stated that the whole time, after shooting Dimebag, Gale was looking for Vinnie, possibly planning to murder him too. Another conjecture was that Gale believed Abbott had stolen a song that he had written. About six months prior to the shooting, Gale got into an altercation at a Damageplan concert in Cincinnati where he damaged $5,000 worth of equipment while being removed from the stage by security.
Question: what caused his death?
Answer: Abbott was shot on-stage while performing

Problem: Background: Oingo Boingo was an American new wave band, best known for their hits "Dead Man's Party" and "Weird Science". They are noted for their high energy live concerts, movie soundtrack contributions, and their mixture of genre, which can be described as including ska, pop, rock, and world music. The band was founded in 1972 as The Mystic Knights of the Oingo Boingo, a performance art group. The band was led by songwriter/vocalist Danny Elfman, who has since achieved success as a composer for film and television.
Context: The Mystic Knights of the Oingo Boingo, formed in late 1972 by Richard Elfman, was a musical theater troupe in the tradition of Spike Jones and Frank Zappa, performing an eclectic repertoire ranging from Cab Calloway covers to instrumentals in the style of Balinese gamelan and Russian ballet music. The name was inspired by a fictional secret society on the Amos 'n' Andy TV series called The Mystic Knights of the Sea. Most of the members performed in whiteface and clown makeup, and a typical show contained music ranging from the 1890s to the 1950s, in addition to original material. This version of the band employed as many as 15 musicians at any given time, playing over 30 instruments, including some instruments built by band members. While this Richard Elfman-led incarnation of the group performed live, it did not issue any recordings. As Richard Elfman's interest shifted to filmmaking, he passed leadership of the band to younger brother Danny Elfman, who had recently returned from spending time in Africa playing violin and studying percussion instruments. They gained a following in Los Angeles, and appeared as contestants on The Gong Show in 1976, winning the episode they appeared on with 24 points out of a possible 30. The Gong Show presentation included an accordion, a purple dragon and a gaseous rocket-man. Later in 1976, The Mystic Knights of the Oingo Boingo released a doo-wop styled novelty single about kidnapped heiress Patty Hearst entitled "You Got Your Baby Back". Both this track and the B-side "Ballad of the Caveman" were written and sung by Danny Elfman. They were featured in the 1976 Martin Brest film Hot Tomorrows; performing the songs St. James Infirmary and 42nd Street. The band appeared as extras in hallucinatory sequences in the 1977 movie I Never Promised You a Rose Garden. When the group began to move away from its cabaret style towards a more pop/rock format, Richard Elfman made a film based on the band's stage performance, Forbidden Zone, which was released in 1980 and filmed in black and white with a cast mostly made up of band members and friends. In one scene, Danny, as Satan, sings a version of Calloway's "Minnie the Moocher" with modified lyrics integrated into the plot of the film. In another, Richard sings the 1920s novelty song "The Yiddishe Charleston". The movie attained cult status and provided a springboard for the film and music careers of Richard and Danny.
Question: what was their greatest accomplishment?
Answer:
When the group began to move away from its cabaret style towards a more pop/rock format, Richard Elfman made a film based on the band's stage performance, Forbidden Zone,