In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: Young David Balfour arrives at a bleak Scottish house, the House of Shaws, to claim his inheritance after his father. The house and land have been under the custodianship of his father's brother, Ebeneezer Balfour, but on reaching adulthood, the land and property become David's. Ebeneezer is having none of it, however, so he first tries to murder him, then has him kidnapped by sea captain Hoseason, with whom he has "a venture for trade in the West Indies". David is shipped off to be sold as a slave in the Carolinas. He strikes up a friendship with Alan Breck, escaping from Prince Charles Edward Stuart's defeat at Culloden. Breck is in a cobble which is run down in the fog by Hoseason's ship and once aboard, asks Hoseason to take him to France. When Hoseason refuses, Breck offers him 60 guineas to put him down on Loch Linnhe.
On discovering that Breck has a money belt full of Jacobite gold, Hoseason and his crew try to kill Breck, but he is forewarned by David and the two kill half a dozen of the crew before the others retreat. Hoseason offers terms to end the fighting, but the ship runs aground. Only Breck and Balfour appear to survive and they manage to get to land. They set out for Edinburgh, dodging the ruthless Redcoats. Numerous adventures follow as they meet up with Breck's family, friends and foes alike. These include Breck's cousin, James Stewart, and his daughter Catriona, with whom David falls in love.
Who does Ebeneezer Balfour try to murder?

Passage: After selecting the music by Alexandrov for the national anthem, Stalin needed new lyrics. He thought that the song was short and, because of the Great Patriotic War, that it needed a statement about the impending defeat of Germany by the Red Army. The poets Sergey Mikhalkov and Gabriel El-Registan were called to Moscow by one of Stalin's staffers, and were told to fix the lyrics to Alexandrov's music. They were instructed to keep the verses the same, but to find a way to change the refrains which described "a Country of Soviets". Because of the difficulty of expressing the concepts of the Great Patriotic War in song, that idea was dropped from the version which El-Registan and Mikhalkov completed overnight. After a few minor changes to emphasize the Russian Motherland, Stalin approved the anthem and had it published on 7 November 1943, including a line about Stalin "inspir[ing] us to keep the faith with the people". The revised anthem was announced to all of the USSR on January 1, 1944 and became official on March 15, 1944.After Stalin's death in 1953, the Soviet government examined his legacy. The government began the de-Stalinization process, which included downplaying the role of Stalin and moving his corpse from Lenin's Mausoleum to the Kremlin Wall Necropolis. In addition, the anthem lyrics composed by Mikhalkov and El-Registan were officially scrapped by the Soviet government in 1956. The anthem was still used by the Soviet government, but without any official lyrics. In private, this anthem became known the "Song Without Words". Mikhalkov wrote a new set of lyrics in 1970, but they were not submitted to the Presidium of the Supreme Soviet until May 27, 1977. The new lyrics, which eliminated any mention of Stalin, were approved on 1 September, and were made official with the printing of the new Soviet Constitution in October 1977. In the credits for the 1977 lyrics, Mikhalkov was mentioned, but references to El-Registan, who died in 1945, were dropped for unknown reasons.
What is the name of the person that wanted to add a statement about the impending defeat of Germany?

Passage: The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the U.S. Army Corps of Engineers. Nuclear physicist Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The Army component of the project was designated the Manhattan District; Manhattan gradually superseded the official codename, Development of Substitute Materials, for the entire project. Along the way, the project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but grew to employ more than 130,000 people and cost nearly US$2 billion (about $23 billion in 2018 dollars). Over 90% of the cost was for building factories and to produce fissile material, with less than 10% for development and production of the weapons. Research and production took place at more than 30 sites across the United States, the United Kingdom, and Canada.
Two types of atomic bombs were developed concurrently during the war: a relatively simple gun-type fission weapon and a more complex implosion-type nuclear weapon. The Thin Man gun-type design proved impractical to use with plutonium, and therefore a simpler gun-type called Little Boy was developed that used uranium-235, an isotope that makes up only 0.7 percent of natural uranium. Chemically identical to the most common isotope, uranium-238, and with almost the same mass, it proved difficult to separate the two. Three methods were employed for uranium enrichment: electromagnetic, gaseous and thermal. Most of this work was performed at the Clinton Engineer Works at Oak Ridge, Tennessee.
In parallel with the work on uranium was an effort to produce plutonium. After the feasibility of the world's first artificial nuclear reactor was demonstrated in Chicago at the Metallurgical Laboratory, it designed the X-10 Graphite Reactor at Oak Ridge and the production reactors in Hanford, Washington, in which uranium was irradiated and transmuted into plutonium. The plutonium was then chemically separated from the uranium, using the bismuth phosphate process. The Fat Man plutonium implosion-type weapon was developed in a concerted design and development effort by the Los Alamos Laboratory.
The project was also charged with gathering intelligence on the German nuclear weapon project. Through Operation Alsos, Manhattan Project personnel served in Europe, sometimes behind enemy lines, where they gathered nuclear materials and documents, and rounded up German scientists. Despite the Manhattan Project's tight security, Soviet atomic spies successfully penetrated the program.

What gun-type used an isotope that makes up only 0.7 percent of natural uranium?