[Q]: Given the below context:  The audience was convinced by these arguments, so disconnected were they from the realities of the Arctic summer storms, fogs, high humidity, and the ever-present threat of ice formation. The academy approved Andrée's expense calculation of 130,800 kronor in all, corresponding in today's money to just under a million U.S. dollars, of which the single largest sum, 36,000 kronor, was for the balloon. With this endorsement, there was a rush to support his project, headed by King Oscar II, who personally contributed 30,000 kronor, and Alfred Nobel, the dynamite magnate and founder of the Nobel Prize.There was also considerable international interest, and the European and American newspaper-reading public was curious about a project that seemed as modern and scientific as the books of the contemporary author Jules Verne. The press fanned the interest with a wide range of predictions, from certain death for the explorers to a safe and comfortable "guidance" of the balloon (upgraded by the reporter to an "airship") to the North Pole in a manner planned by Parisian experts and Swedish scientists. "In these days, the construction and guidance of airships have been improved greatly", wrote The Providence Journal, "and it is supposed, both by the Parisian experts and by the Swedish scientists who have been assisting M. Andree, that the question of a sustained flight, in this case, will be very satisfactorily answered by the character of the balloon, by its careful guidance and, providing it gets into a Polar current of air, by the elements themselves." Faith in the experts and in science was common in the popular press, but with international attention came also for the first time informed criticism. Andrée being Sweden's first balloonist, no one had the requisite knowledge to second-guess him about buoyancy or drag ropes; but both Germany and France had long ballooning traditions and several of their more experienced balloonists expressed skepticism about Andrée's methods and inventions.However, just as with the Svea...  Guess a valid title for it!
****
[A]: Andrée's Arctic balloon expedition


input: Please answer the following: Given the below context:  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 Frisch–Peierls memorandum, which was the initial step in the development of the nuclear arms programme in Britain. This...  Guess a valid title for it!
++++++++++
output: Tube Alloys


Problem: Given the below context:  After the October Tour, U2 decamped to a rented cottage in Howth, where they lived, wrote new songs, and rehearsed for their third album, War. Significant musical breakthroughs were achieved by the Edge in August 1982 during a two-week period of independent songwriting, while the other band members vacationed and Bono honeymooned with his wife Ali. From September to November, the group recorded War at Windmill Lane Studios. Lillywhite, who had a policy of not working with an artist more than twice, was convinced by the group to return as their producer for a third time. The recording sessions featured contributions from violinist Steve Wickham and the female singers of Kid Creole and the Coconuts. For the first time, Mullen agreed to play drums to a click track to keep time. After completing the album, U2 undertook a short tour of Western Europe in December. War's lead single, "New Year's Day", was released on 1 January 1983. It reached number 10 in the UK and became the group's first hit outside of Europe; in the US, it received extensive radio coverage and peaked at number 53. Resolving their doubts of the October period, U2 released War in February. Critically, the album received favourable reviews, although a few UK reviewers were critical of it. Nonetheless, it was the band's first commercial success, debuting at number one in the UK, while reaching number 12 in the US. War's sincerity and "rugged" guitar were intentionally at odds with the trendier synthpop of the time. A record on which the band "turned pacifism itself into a crusade", War was lyrically more political than their first two records, focusing on the physical and emotional effects of warfare. The album included the protest song "Sunday Bloody Sunday", in which Bono lyrically tried to contrast the events of the 1972 Bloody Sunday shooting with Easter Sunday. Other songs from the record addressed topics such as nuclear proliferation ("Seconds") and the Polish Solidarity movement ("New Year's Day"). War was U2's first record to feature...  Guess a valid title for it!

A:
U2