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.

Input: Consider 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 (Grenzaufklärungszug 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.

Output: What is the nickname of the group that screened out many potential recruits?


Input: Consider Input: Passage: Dr. Henry Jekyll, a kind English doctor in Victorian London, is certain that within each man lurks impulses for both good and evil. He is desperately in love with his fiancée Muriel Carew and wants to marry her immediately. But her father, Brigadier General Sir Danvers Carew, orders them to wait. One night, while walking home with his colleague, Dr. John Lanyon, Jekyll spots a bar singer, Ivy Pierson, being attacked by a man outside her boarding house. Jekyll drives the man away and carries Ivy up to her room to attend to her. Ivy tries to seduce Jekyll but, though he is tempted, he leaves with Lanyon.
When Sir Danvers takes Muriel to Bath, Jekyll begins to experiment with drugs that he believes will unleash his evil side. After imbibing a concoction of these drugs, he transforms into Edward Hyde—an impulsive, violent, amoral man who indulges his every desire. Hyde finds Ivy in the music hall where she works. He offers to financially support her in return for her company. They stay at her boarding house where Hyde sexually abuses and psychologically manipulates her. When Hyde reads in the paper that Sir Danvers and Muriel are planning to return to London, Hyde leaves Ivy but threatens her that he'll return when she least expects it.
Overcome with guilt, Jekyll sends £50 to Ivy. On the advice of her landlady, Ivy goes to see Dr. Jekyll and recognizes him as the man who saved her from abuse that night. She tearfully tells him about her situation with Hyde, and Jekyll reassures her that she will never see Hyde again. But the next night, while walking to a party at Muriel's where the wedding date is to be announced, Jekyll spontaneously changes into Hyde. Rather than attend the party, Hyde goes to Ivy's room and murders her.

Output: Who is with Henry Jekyll when he sees a woman needing help?


Input: Consider Input: Passage: Good Girl Gone Bad received generally favorable reviews from music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 72 based on 17 reviews. Uncut called it a "shiny, trans-atlantic blend of Europop vim, R&B grit and Caribbean bounce." Andy Kellman of AllMusic deemed it quintessential pop music and said each of its tracks was a potential hit. Quentin B. Huff of PopMatters praised the album, describing it as "more raw, perhaps edgier and more risqué" than Rihanna's previous material. Kelefa Sanneh of The New York Times wrote that the album "sounds as if it were scientifically engineered to deliver hits". Peter Robinson of The Observer commended her collaborators for "masking her own shortcomings" and commented that, "While Rihanna lacks her peers' charisma, she's a great vessel for exhilarating mainstream pop." Pitchfork Media's Tom Breihan found the album varied and satisfying. Neil Drumming of Entertainment Weekly felt that, although it "goes bad when Rihanna tries her hand at treacly ballads and glum sentiment", at times Good Girl Gone Bad is a "thrilling throwback to more than a decade ago, when upstart producers haphazardly mashed R&B with hip-hop to create chunky jeep anthems such as Mary J. Blige's 'Real Love'."In a mixed review, Rodney Dugue of The Village Voice felt that the album "never settles on a sound" and only cited its three Timbaland-produced songs as highlights. Although he found the ballads to be improvements from Rihanna's previous albums, Slant Magazine's Sal Cinquemani criticized the lyrics, particularly those written by Justin Timberlake, as an "Achilles' high heel for Rihanna". Alex Macpherson of The Guardian found Rihanna to be "ill-suited" for its dance-pop songs and stated, "The gimmicky samples and pounding beats bury her personality, and the summery reggae of her first two albums is sorely missed." Robert Christgau of MSN Music cited "Umbrella" as a "choice cut", indicating "a good song on an album that isn't worth your time or money".
Output: What is the full name of the man who found the album that had Timbaland produce on it to have ballads that were improvements from the last album?