input: Daniel Barenboim was born in 1942 in Buenos Aires, Argentina, to Argentinian-Jewish parents Aida (nee Schuster) and Enrique Barenboim. He started piano lessons at the age of five with his mother, continuing to study with his father, who remained his only teacher. On 19 August 1950, at the age of seven, he gave his first formal concert in his hometown, Buenos Aires. In 1952, Barenboim's family moved to Israel. Two years later, in the summer of 1954, his parents took him to Salzburg to take part in Igor Markevitch's conducting classes. During that summer he also met and played for Wilhelm Furtwangler, who has remained a central musical influence and ideal for Barenboim. Furtwangler called the young Barenboim a "phenomenon" and invited him to perform the Beethoven First Piano Concerto with the Berlin Philharmonic, but Barenboim's father considered it too soon after the Second World War for a child of Jewish parents to be performing in Berlin. In 1955 Barenboim studied harmony and composition with Nadia Boulanger in Paris. On 15 June 1967, Barenboim and British cellist Jacqueline du Pre were married in Jerusalem at a Western Wall ceremony, Du Pre having converted to Judaism. Acting as one of the witnesses was the conductor Zubin Mehta, a long-time friend of Barenboim. Since "I was not Jewish I had to temporarily be renamed Moshe Cohen, which made me a 'kosher witness'," Mehta recalled. Du Pre retired from music in 1973, after being diagnosed with multiple sclerosis (MS). The marriage lasted until du Pre's death in 1987. In the early 1980s, Barenboim began an affair with the Russian pianist Elena Bashkirova, with whom he had two sons born in Paris before du Pre's death: David Arthur, born 1983, and Michael, born 1985. Barenboim worked to keep his relationship with Bashkirova hidden from du Pre, and believed he had succeeded. He and Bashkirova married in 1988. Both sons are part of the music world: David is a manager-writer for the German hip-hop band Level 8, and Michael Barenboim is a classical violinist.

Answer this question "Who was a witness to their marriage?"
output: Acting as one of the witnesses was the conductor Zubin Mehta, a long-time

input: In October 1998, three former members of the Dead Kennedys sued Biafra for nonpayment of royalties. The other members of Dead Kennedys alleged that after Biafra, in his capacity as the head of Alternative Tentacles records, discovered an accounting error amounting to some $75,000 in unpaid royalties over almost a decade. Rather than informing his bandmates of this mistake, the suit alleged, Biafra knowingly concealed the information until a whistleblower employee at the record label notified the band. According to Biafra, the suit resulted from his refusal to allow one of the band's most well-known singles, "Holiday in Cambodia", to be used in a commercial for Levi's Dockers; Biafra opposes Levi's because of his claim that they use unfair business practices and sweatshop labor. Biafra maintained that he had never denied them royalties, and that he himself had not even received royalties for re-releases of their albums or "posthumous" live albums which had been licensed to other labels by the Decay Music partnership. Decay Music denied this charge and have posted what they say are his cashed royalty checks, written to his legal name of Eric Boucher. Biafra also complained about the songwriting credits in new reissues and archival live albums of songs, alleging that he was the sole composer of songs that were wrongly credited to the entire band. In May 2000, a jury found Biafra and Alternative Tentacles "guilty of malice, oppression and fraud" by not promptly informing his former bandmates of the accounting error and instead withholding the information during subsequent discussions and contractual negotiations. Biafra was ordered to pay $200,000, including $20,000 in punitive damages. After an appeal by Biafra's lawyers, in June 2003, the California Court of Appeal unanimously upheld all the conditions of the 2000 verdict against Biafra and Alternative Tentacles. Furthermore, the plaintiffs were awarded the rights to most of Dead Kennedys recorded works -- which accounted for about half the sales for Alternative Tentacles. Now in control of the Dead Kennedys name, Biafra's former bandmates went on tour with a new lead vocalist.

Answer this question "what was the lawsuit about?"
output: the Dead Kennedys sued Biafra for nonpayment of royalties.

input: Mukhina took an interest in gymnastics and figure skating at an early age. When an athletic scout visited her school, she eagerly volunteered to try out for gymnastics. She later joined the CSKA Moscow ("Central Red Army") sports club. In recognition of her accomplishments, Mukhina was inducted into the CSKA Hall of Fame. Up until 1975, Mukhina was an unremarkable gymnast, and Soviet coaches largely ignored her. Then, two separate incidents brought her skills to the forefront for the Soviet team: Romanian domination of the Soviet gymnastics machine at the 1976 Olympics (for which the director for Soviet women's gymnastics, Larisa Latynina, was blamed; Latynina's response was, "it's not my fault that Nadia Comaneci was born in Romania"); and Mukhina's transition to working with men's coach Mikhail Klimenko, who transformed her into one of the most show-stopping gymnasts of her time. She burst onto the scene at the 1978 World Championships in Strasbourg, France. In one of the most stunning all-around performances in history, she won the gold medal, beating out Olympic Champions Nadia Comaneci and top-ranked Soviet gymnast Nellie Kim, among others. She also tied for the gold medal in the floor exercise event final, as well as winning the silver in balance beam and uneven bars. She made history in this competition by unveiling her signature moves: a full-twisting layout Korbut Flip on bars; a tucked double back salto dismount on beam (a move that is still being used over three decades later); and a full-twisting double back somersault on floor (still an E-rated move in the Code of Points) dubbed the "Muchina". Yet, in spite of these innovations, Mukhina maintained the classic Soviet style, inspired by ballet movements and expressive lines. She quickly established herself as an athlete to watch for at the 1980 Summer Olympics in Moscow. A documentary film of the Soviet national team (1978) features Mukhina talking with her coach, Mikhail Klimenko, and footage of her rigorous training regimen.

Answer this question "what was her greatest achievement?"
output:
She made history in this competition by unveiling her signature moves: a full-twisting layout Korbut Flip on bars; a tucked double back salto dismount on beam