input: Please answer the following: What were the last names of the two people who were enemy aliens? 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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output: Peierls

input: Please answer the following: What is the last name of the person whose recurrent depictions of female nudity was condemned as indecent? Answer the above question based on the context below: William Etty (17871849), the seventh son of a York baker and miller, had originally been an apprentice printer in Hull, but on completing his seven-year apprenticeship in 1805 moved to London to become an artist. In January 1807 he was admitted to the Royal Academy Schools as a probationer, and in July of that year became a student of renowned portrait painter Thomas Lawrence, studying under him for a year.Strongly influenced by the works of Titian and Rubens, Etty became famous for painting nude figures in biblical, literary and mythological settings. He became well-respected for his ability to capture flesh tones accurately in painting, and for his fascination with contrasts in skin tones. Many of his peers greatly admired his work, and in February 1828 he defeated John Constable by 18 votes to five to become a full Royal Academician, at the time the highest honour available to an artist.Between 1820 and 1829 Etty exhibited 15 paintings, of which 14 depicted nude figures. While some nude paintings by foreign artists existed in private collections in England, the country had no tradition of nude painting and the display and distribution of nude material to the public had been suppressed since the 1787 Proclamation for the Discouragement of Vice.Etty was the first British artist to specialise in the nude, and the prurient reaction of the lower classes to these paintings caused concern throughout the 19th century. Although his portraits of male nudes were generally well received, many critics condemned his recurrent depictions of female nudity as indecent.
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output: Etty

input: Please answer the following: What is the first name of the person who married her husband to form a comparable and well-matched marriage Answer the above question based on the context below: Barbara Holper was the daughter of Hieronymus Holper, under whom Albrecht the Elder served his apprenticeship as a goldsmith. The two men became friends, and when she came of age Holper gave his daughter into marriage when Durer senior was 40 and she was 15. The couple were compatible, well-matched and fond of each other. Yet their son's writings detail their difficult lives and many setbacks; three of their 18 children survived into adulthood 17 of whom had been born by the time of this portrait. After her husband died Barbara was destitute and went to live with her son. After she in turn died in 1514, her son wrote "This my pious Mother ... often had the plague and many other severe and strange illnesses, and she suffered great poverty, scorn, contempt, mocking words, terrors, and great adversities. Yet she bore no malice. Also she died hard ... I felt so grieved for her that I cannot express it." Barbara is shown wearing a red dress and a matte white bonnet which fully covers her hair, indicating her marital status. Her headdress is draped with a long scarf or train which stretches down her neck and across her left shoulder, contrasting in colour and shape against the black head-wear of her husband. The lines of her face contain touches of white paint to give a highlighting and enlivening effect; they are especially evident around her eyes, the bridge of her nose and around her upper lip. Barbara was attractive in her youth; her son described her as having been "comely and of erect bearing". However, by the time of this portrait the effects of time and losing so many children weigh heavily on her face. The panel was grounded with white paint, while the composition seems to have changed significantly from the imprimatura. Faint traces of the original figuration are visible in parts of the background and in the darkened areas of her hood. At some point the panel was cut down at the left side, shifting the compositional balance and removing a portion of her shoulder and headdress.
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output: Barbara

input: Please answer the following: What is the first name of the sibling that died? Answer the above question based on the context below: Amidst mourning with her family, she focused on work to deal with the grief, avoiding any news coverage of her sibling's death. She commented, "it's still important to face reality, and not that I'm running, but sometimes you just need to get away for a second." During this time, she ended her seven-year relationship with Jermaine Dupri.Several months later, Jackson performed a tribute to Michael at the 2009 MTV Video Music Awards, performing their duet "Scream". MTV stated "there was no one better than Janet to anchor it and send a really powerful message." The performance was lauded by critics, with Entertainment Weekly affirming the rendition "as energetic as it was heartfelt".Jackson's second hits compilation, Number Ones (retitled The Best for international releases), was released in November 2009. For promotion, she performed a medley of hits at the American Music Awards, Capital FM's Jingle Bell Ball at London's O2 arena, and The X-Factor. The album's promotional single "Make Me", produced with Rodney "Darkchild" Jerkins, debuted in September. It became Jackson's nineteenth number one on the Hot Dance Club Songs chart, making her the first artist to have number-one singles in four separate decades.Later that month, Jackson chaired the inaugural benefit of amfAR, The Foundation for AIDS Research, held in Milan in conjunction with fashion week. The foundation's CEO stated "We are profoundly grateful to Janet Jackson for joining amfAR as a chair of its first event in Milan.... She brings incomparable grace and a history of dedication to the fight against AIDS." The event raised a total of $1.1 million for the nonprofit organization.
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output:
Michael