In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Passage: Colour lies at the heart of Messiaen's music. He believed that terms such as "tonal", "modal" and "serial" are misleading analytical conveniences. For him there were no modal, tonal or serial compositions, only music with or without colour. He said that Claudio Monteverdi, Mozart, Chopin, Richard Wagner, Mussorgsky and Stravinsky all wrote strongly coloured music.In some of Messiaen's scores, he notated the colours in the music (notably in Couleurs de la cité céleste and Des canyons aux étoiles...)—the purpose being to aid the conductor in interpretation rather than to specify which colours the listener should experience. The importance of colour is linked to Messiaen's synaesthesia, which he said caused him to experience colours when he heard or imagined music (he said that he did not perceive the colours visually). In his multi-volume music theory treatise Traité de rythme, de couleur, et d'ornithologie ("Treatise of Rhythm, Colour and Birdsong"), Messiaen wrote descriptions of the colours of certain chords. His descriptions range from the simple ("gold and brown") to the highly detailed ("blue-violet rocks, speckled with little grey cubes, cobalt blue, deep Prussian blue, highlighted by a bit of violet-purple, gold, red, ruby, and stars of mauve, black and white. Blue-violet is dominant").When asked what Messiaen's main influence had been on composers, George Benjamin said, "I think the sheer ... colour has been so influential, ... rather than being a decorative element, [Messiaen showed that colour] could be a structural, a fundamental element, ... the fundamental material of the music itself.". 
Question: What is the name of the person who said Monteverdi, Mozart, Chopin, Wagner, Mussorgsky, and Stravinsky all wrote strongly coloured music?
Messiaen.

Passage: An Army-OSRD council on 25 June 1942 decided to build a pilot plant for plutonium production in Red Gate Woods southwest of Chicago. In July, Nichols arranged for a lease of 1,025 acres (415 ha) from the Cook County Forest Preserve District, and Captain James F. Grafton was appointed Chicago area engineer. It soon became apparent that the scale of operations was too great for the area, and it was decided to build the plant at Oak Ridge, and keep a research and testing facility in Chicago.Delays in establishing the plant in Red Gate Woods led Compton to authorize the Metallurgical Laboratory to construct the first nuclear reactor beneath the bleachers of Stagg Field at the University of Chicago. The reactor required an enormous amount of graphite blocks and uranium pellets. At the time, there was a limited source of pure uranium. Frank Spedding of Iowa State University were able to produce only two short tons of pure uranium. Additional three short tons of uranium metal was supplied by Westinghouse Lamp Plant which was produced in a rush with makeshift process. A large square balloon was constructed by Goodyear Tire to encase the reactor. On 2 December 1942, a team led by Enrico Fermi initiated the first artificial self-sustaining nuclear chain reaction in an experimental reactor known as Chicago Pile-1. The point at which a reaction becomes self-sustaining became known as "going critical". Compton reported the success to Conant in Washington, D.C., by a coded phone call, saying, "The Italian navigator [Fermi] has just landed in the new world."In January 1943, Grafton's successor, Major Arthur V. Peterson, ordered Chicago Pile-1 dismantled and reassembled at Red Gate Woods, as he regarded the operation of a reactor as too hazardous for a densely populated area. At the Argonne site, Chicago Pile-3, the first heavy water reactor, went critical on 15 May 1944. After the war, the operations that remained at Red Gate moved to the new site of the Argonne National Laboratory about 6 miles (9.7 km) away. 
Question: What is the first name of the person who regarded the operation of a reactor as too hazardous for a densely populated area?
Arthur.

Passage: On 22 December a public memorial service took place for Tucker, Bentley and Choate at St Paul's Cathedral. King George V was represented by Edward Wallington, his Groom in Waiting; also present were Churchill and the Lord Mayor of London. The crime had shocked Londoners and the service showed evidence of their feelings. An estimated ten thousand people waited in St Paul's environs, and many local businesses closed as a mark of respect; the nearby London Stock Exchange ceased trading for half an hour to allow traders and staff to watch the procession along Threadneedle Street. After the service, when the coffins were being transported on an eight-mile (13 km) journey to the cemeteries, it was estimated that 750,000 people lined the route, many throwing flowers onto the hearses as they passed.Identity parades were held at Bishopsgate police station on 23 December. Isaac Levy, who had seen the group leaving Exchange Buildings, identified Peters and Dubof as the two he had seen carrying Gardstein. It was also ascertained that Federoff had been witnessed at the events. The following day Federoff, Peters and Dubof all appeared at the Guildhall police court where they were charged with being connected to the murder of the three policemen, and with conspiracy to burgle the jewellery shop. All three pleaded not guilty.On 27 December the poster bearing Gardstein's picture was seen by his landlord, who alerted police. Wensley and his colleagues visited the lodgings on Gold Street, Stepney and found knives, a gun, ammunition, false passports and revolutionary publications. Two days later there was another hearing at the Guildhall police court. In addition to Federoff, Peters and Dubof, present in the dock were Milstein and Trassjonsky. With some of the defendants having a low standard of English, interpreters were used throughout the proceedings. At the end of the day the case was adjourned until 6 January 1911.On New Year's Day 1911 the body of Léon Beron, a Russian Jewish immigrant, was found on Clapham Common in South London. He had been badly beaten and two S-shaped cuts, both two inches long, were on his cheeks. The case became connected in the press with the Houndsditch murders and the subsequent events at Sidney Street, although the evidence at the time for the link was scant. The historian F G Clarke, in his history of the events, located information from another Latvian who stated that Beron had been killed not because he was one of the informers who had passed on information, but because he was planning to pass the information on, and the act was a pre-emptive one, designed to scare the locals into not informing on the anarchists.The posters of Gardstein proved effective, and late on New Year's Day a member of the public came forward to provide information about Svaars and Sokoloff. The informant told police that the men were hiding at 100 Sidney Street, along with a lodger, Betty Gershon, who was Sokoloff's mistress. The informant was persuaded to visit the property the following day to confirm the two men were still present. A meeting took place on the afternoon of 2 January to decide the next steps. Wensley, high-ranking members of the Metropolitan force and Sir William Nott-Bower, the Commissioner of the City Police, were present. 
Question: What is the name of the person that had knives, a gun, ammunition, false passports and revolutionary publications in their apartment?

Gardstein.