Problem: Given the question: What were the full names of the two people who calculated the critical mass of uranium? Answer the above question based on the context below: At Birmingham, Oliphant's team had reached a different conclusion. Oliphant had delegated the task to two German refugee scientists, Rudolf Peierls and Otto Frisch, who could not work on Oliphant's radar project because they were enemy aliens and therefore lacked the necessary security clearance. Francis Perrin had calculated the critical mass of uranium to be about 40 tonnes (39 long tons; 44 short tons). He reckoned that if a neutron reflector were placed around it, this might be reduced to 12 tonnes (12 long tons; 13 short tons). Peierls attempted to simplify the problem by using the fast neutrons produced by fission, thus omitting consideration of moderator. He too calculated the critical mass of a sphere of uranium in a theoretical paper written in 1939 to be "of the order of tons".Peierls knew the importance of the size of the critical mass that would allow a chain reaction to take place and its practical significance. In the interior of a critical mass sphere, neutrons are spontaneously produced by the fissionable material. A very small portion of these neutrons are colliding with other nuclei, while a larger portion of the neutrons are escaping through the surface of the sphere. Peierls calculated the equilibrium of the system, where the number of neutrons being produced equalled the number escaping.Niels Bohr had theorised that the rare uranium-235 isotope, which makes up only about 0.7% of natural uranium, was primarily responsible for fission with fast neutrons, although this was not yet universally accepted. Frisch and Peierls were thus able to revise their initial estimate of critical mass needed for nuclear fission in uranium to be substantially less than previously assumed. They estimated a metallic sphere of uranium-235 with a radius of 2.1 centimetres (0.83 in) could suffice. This amount represented approximately 1 kilogram (2.2 lb) of uranium-235. These results led to the FrischPeierls memorandum, which was the initial step in the development of the nuclear arms programme in Britain. This...
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The answer is:
Rudolf Peierls

Problem: Given the question: What are the first names of the two individuals who met with members of Comite de Madres Monsignor Romero in El Salvador? Answer the above question based on the context below: Recording sessions for The Joshua Tree began in January 1986 in Danesmoate House in Dublin and continued throughout the year. U2 briefly interrupted these sessions in June to join Amnesty International's A Conspiracy of Hope tour of benefit concerts. Following the first concert in San Francisco, lead singer Bono met Rene Castro, a Chilean mural artist. Castro had been tortured and held in a concentration camp for two years by the dictatorial Chilean government because his artwork criticised the Pinochet-led regime that seized power in 1973 during a coup d'etat. Castro showed Bono a wall painting in the Mission District that depicted the ongoing plight in Chile and Argentina. He also learned of the Madres de Plaza de Mayo, a group of women whose children were forcibly disappeared by the Argentine government. The Madres' children were students who had opposed the government during the Dirty War, and the coup d'etat that brought Jorge Rafael Videla to power. The Madres joined together to campaign for information regarding the locations of their children's bodies and the circumstances of their deaths, believing them to have been kidnapped, tortured, and murdered.Inspired by the mural, Bono took an extended break from recording into July, traveling to Nicaragua and El Salvador with his wife, Alison Hewson, to see first-hand the distress of peasants bullied by political conflicts and US military intervention. While there, they worked with the Central American Mission Partners (CAMP), a human rights and economic development organization. In El Salvador they met members of the Comite de Madres Monsignor Romero (COMADRES: Committee of the Mothers Monsignor Romero), an organization of women whose children were forcibly disappeared by the Salvadoran government during the Civil War because they opposed the military regime that was in power. At one point during the trip, Bono, Alison, and a member of CAMP were shot at by government troops while on their way to deliver aid to a group of farmers. The shots were a warning...
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The answer is:
Bono

Problem: Given the question: What is the name of the person that had a solo album named Radio K.A.O.S? Answer the above question based on the context below: In Waters' absence, Gilmour had been recruiting musicians for a new project. Months previously, keyboardist Jon Carin had jammed with Gilmour at his Hookend studio, where he composed the chord progression that became "Learning to Fly", and so was invited onto the team. Gilmour invited Bob Ezrin (co-producer of 1979's The Wall) to help consolidate their material; Ezrin had turned down Waters' offer of a role on the development of his new solo album, Radio K.A.O.S., saying it was "far easier for Dave and I to do our version of a Floyd record". Ezrin arrived in England in mid-1986 for what Gilmour later described as "mucking about with a lot of demos".At this stage, there was no commitment to a new Pink Floyd release, and Gilmour maintained that the material might become his third solo album. CBS representative Stephen Ralbovsky hoped for a new Pink Floyd album, but in a meeting in November 1986, told Gilmour and Ezrin that the music "doesn't sound a fucking thing like Pink Floyd". Gilmour later said that the new project was difficult without Waters. He experimented with songwriters such as Eric Stewart and Roger McGough, but eventually settled on Anthony Moore, who was credited as co-writer of "Learning to Fly" and "On the Turning Away". Whereas many prior Pink Floyd albums are concept albums, Gilmour settled for the more conventional approach of a collection of songs without a thematic link. By the end of that year, he had decided to make the material into a Pink Floyd project.
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The answer is:
Waters