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.

Example Input: Passage: Like Green, who made particular mention of Beiderbecke's "amount of teaching," the jazz historian Ted Gioia also has emphasized Beiderbecke's lack of formal instruction, suggesting that it caused him to adopt "an unusual, dry embouchure" and "unconventional fingerings," which he retained for the rest of his life. Gioia points to "a characteristic streak of obstinacy" in Beiderbecke that provokes "this chronic disregard of the tried-and-true." He argues that this stubbornness was behind Beiderbecke's decision not to switch from cornet to trumpet when many other musicians, including Armstrong, did so. In addition, Gioia highlights Beiderbecke's precise timing, relaxed delivery, and pure tone, which contrasted with "the dirty, rough-edged sound" of King Oliver and his protege Armstrong, whose playing was often more energetic and whose style held more sway early in the 1920s than Beiderbecke's.
Beiderbecke's playing - both as a cornetist and a pianist - had a profound effect on a number of his contemporaries. Eddie Condon, for instance, described Beiderbecke's cornet playing as "like a girl saying yes" and also wrote of being amazed by Beiderbecke's piano playing: "All my life I had been listening to music [] But I had never heard anything remotely like what Beiderbecke played. For the first time I realized music isn't all the same, it had become an entirely new set of sounds" "I tried to explain Bix to the gang," Hoagy Carmichael wrote, but "[i]t was no good, like the telling of a vivid, personal dream [] the emotion couldn't be transmitted."Mezz Mezzrow described Beiderbecke's tone as being "pickled in alcohol [] I have never heard a tone like he got before or since. He played mostly open horn, every note full, big, rich and round, standing out like a pearl, loud but never irritating or jangling, with a powerful drive that few white musicians had in those days."Some critics have highlighted "Jazz Me Blues", recorded with the Wolverines on February 18, 1924, as being particularly important to understanding Beiderbecke's style. Although it was one of his earliest recordings, the hallmarks of his playing are evident. "The overall impression we get from this solo, as in all of Bix at his best," writes the trumpeter Randy Sandke, "is that every note is spontaneous yet inevitable." Richard Hadlock describes Beiderbecke's contribution to "Jazz Me Blues" as "an ordered solo that seems more inspired by clarinetists Larry Shields of the ODJB and Leon Roppolo of the NORK than by other trumpet players." He goes on to suggest that clarinetists, by virtue of their not being tied to the melody as much as cornetists and trumpet players, could explore harmonies.
Example Output: What is the first name of the person who highlights Beiderbecke's precise timing, relaxed delivery, and pure tone?

Example Input: Passage: Makeba was among the most visible people campaigning against the apartheid system in South Africa, and was responsible for popularising several anti-apartheid songs, including "Meadowlands" by Strike Vilakezi and "Ndodemnyama we Verwoerd" (Watch out, Verwoerd) by Vuyisile Mini. Due to her high profile, she became a spokesperson of sorts for Africans living under oppressive governments, and in particular for black South Africans living under apartheid. When the South African government prevented her from entering her home country, she became a symbol of "apartheid's cruelty", and she used her position as a celebrity by testifying against apartheid before the UN in 1962 and 1964. Many of her songs were banned within South Africa, leading to Makeba's records being distributed underground, and even her apolitical songs being seen as subversive. She thus became a symbol of resistance to the white-minority government both within and outside South Africa. In an interview in 2000, Masekela said that "there [was] nobody in Africa who made the world more aware of what was happening in South Africa than Miriam Makeba."Makeba has also been associated with the movement against colonialism, with the civil rights and black power movements in the US, and with the Pan-African movement. She called for unity between black people of African descent across the world: "Africans who live everywhere should fight everywhere. The struggle is no different in South Africa, the streets of Chicago, Trinidad or Canada. The Black people are the victims of capitalism, racism and oppression, period". After marrying Carmichael she often appeared with him during his speeches; Carmichael later described her presence at these events as an asset, and Feldstein wrote that Makeba enhanced Carmichael's message that "black is beautiful". Along with performers such as Simone, Lena Horne, and Abbey Lincoln, she used her position as a prominent musician to advocate for civil rights. Their activism has been described as simultaneously calling attention to racial and gender disparities, and highlighting "that the liberation they desired could not separate race from sex". Makeba's critique of second-wave feminism as being the product of luxury led to observers being unwilling to call her a feminist. Scholar Ruth Feldstein stated that Makeba and others influenced both black feminism and second-wave feminism through their advocacy, and the historian Jacqueline Castledine referred to her as one of the "most steadfast voices for social justice".
Example Output: What is the first name of the person who became a symbol of resistance to the white-minority government?

Example Input: Passage: Following the end of the Second World War, the East German side of the border was guarded initially by the Border Troops (Pogranichnyie Voiska) of the Soviet NKVD (later the KGB). They were supplemented from 1946 by a locally recruited paramilitary force, the German Border Police (Deutsche Grenzpolizei or DGP), before the Soviets handed over full control of the border to the East Germans in 1955/56. In 1961, the DGP was converted into a military force within the National People's Army (Nationale Volksarmee, NVA). The newly renamed Border Troops of the GDR (Grenztruppen der DDR, commonly nicknamed the Grenzer) came under the NVA's Border Command or Grenzkommando. They were responsible for securing and defending the borders with West Germany, Czechoslovakia, Poland, the Baltic Sea and West Berlin. At their peak, the Grenztruppen had up to 50,000 personnel.Around half of the Grenztruppen were conscripts, a lower proportion than in other branches of the East German armed forces. Many potential recruits were screened out as potentially unreliable; for instance, actively religious individuals or those with close relatives in West Germany. They were all subjected to close scrutiny to assure their political reliability and were given intensive ideological indoctrination.A special unit of the Stasi secret police worked covertly within the Grenztruppen, posing as regular border guards, between 1968 and 1985, to weed out potential defectors. One in ten officers and one in thirty enlisted men were said to have been recruited by the Stasi as informers. The Stasi regularly interviewed and maintained files on every guard. Stasi operatives were directly responsible for some aspects of security; passport control stations at crossings were manned by Stasi officers wearing Grenztruppen uniforms.The Grenztruppen were closely watched to ensure that they could not take advantage of their inside knowledge to escape across the border. Patrols, watchtowers and observation posts were always manned by two or three guards at a time. They were not allowed to go out of each other's sight in any circumstances. If a guard attempted to escape, his colleagues were under instructions to shoot him without hesitation or prior warning; 2,500 did escape to the West, 5,500 more were caught and imprisoned for up to five years, and a number were shot and killed or injured in the attempt.
The work of the guards involved carrying out repair work on the defences, monitoring the zone from watchtowers and bunkers and patrolling the line several times a day. Border Reconnaissance (Grenzaufklarungszug or GAK) soldiers, an elite reconnaissance force, carried out patrols and intelligence-gathering on the western side of the fence. Western visitors to the border were routinely photographed by the GAKs, who also oversaw work detachments maintaining the fence. The workers would be covered by machine guns to discourage them from attempting to escape.
Example Output:
What is the nickname of the group that screened out many potential recruits?