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

Passage: Immediately after Aaliyah's death, there was uncertainty over whether the music video for "Rock the Boat" would ever air. It made its world premiere on BET's Access Granted on October 9, 2001. She won two posthumous awards at the American Music Awards of 2002; Favorite Female R&B Artist and Favorite R&B/Soul Album for Aaliyah. Her second and final film, Queen of the Damned, was released in February 2002. Before its release, Aaliyah's brother, Rashad, re-dubbed some of her lines during post-production. It grossed US$15.2 million in its first weekend, ranking number one at the box office. On the first anniversary of Aaliyah's death, a candlelight vigil was held in Times Square; millions of fans observed a moment of silence; and throughout the United States, radio stations played her music in remembrance. In December 2002, a collection of previously unreleased material was released as Aaliyah's first posthumous album, I Care 4 U. A portion of the proceeds was donated to the Aaliyah Memorial Fund, a program that benefits the Revlon UCLA Women's Cancer Research Program and Harlem's Sloan Kettering Cancer Center. It debuted at number three on the Billboard 200, selling 280,000 copies in its first week. The album's lead single, "Miss You", peaked at number three on the Billboard Hot 100 and topped the Hot R&B/Hip-Hop Songs chart. In August of the following year, clothing retailer Christian Dior donated profits from sales in honor of Aaliyah.In 2005, Aaliyah's second compilation album, Ultimate Aaliyah was released in the UK by Blackground Records. Ultimate Aaliyah is a three disc set, which included a greatest hits audio CD and a DVD. Andy Kellman of AllMusic remarked "Ultimate Aaliyah adequately represents the shortened career of a tremendous talent who benefited from some of the best songwriting and production work by Timbaland, Missy Elliott, and R. Kelly." A documentary movie Aaliyah Live in Amsterdam was released in 2011, shortly before the tenth anniversary of Aaliyah's death. The documentary, by Pogus Caesar, contained previously unseen footage shot of her career beginnings in 1995 when she was appearing in the Netherlands.In March 2012, music producer Jeffrey "J-Dub" Walker announced on his Twitter account that a song "Steady Ground", which he produced for Aaliyah's third album, would be included in the forthcoming posthumous Aaliyah album. This second proposed posthumous album would feature this song using demo vocals, as Walker claims the originals were somehow lost by his sound engineer. Aaliyah's brother Rashad later refuted Walker's claim, claiming that "no official album [is] being released and supported by the Haughton family.".
"Miss You" was the lead single on which album?

Passage: Oklahoma has been politically conservative for much of its history, especially recently. During the first half-century of statehood, it was considered a Democratic stronghold, being carried by the Republican Party in only two presidential elections (1920 and 1928). During this time, it was also carried by every winning Democratic candidate up to Harry Truman. However, Oklahoma Democrats were generally considered to be more conservative than Democrats in other states.
After the 1948 election, the state turned firmly Republican. Although registered Republicans were a minority in the state until 2015, starting in 1952, Oklahoma has been carried by Republican presidential candidates in all but one election (1964). This is not to say every election has been a landslide for Republicans: Jimmy Carter lost the state by less than 1.5% in 1976, while Michael Dukakis and Bill Clinton both won 40% or more of the state's popular vote in 1988 and 1996 respectively. Al Gore in 2000, though, was the last Democrat to even win any counties in the state. Oklahoma was one of three states, the others being Utah and West Virginia, where Barack Obama failed to carry any of its counties in 2012, and it was the only state where Barack Obama failed to carry any county in 2008. In 2016, Donald Trump, the Republican nominee, again won every county, being one of only two states, the other being West Virginia, where Democrat Hillary Clinton failed to carry a single county.
Generally, Republicans are strongest in the suburbs of Oklahoma City and Tulsa, as well as the Panhandle. Democrats are strongest in the eastern part of the state and Little Dixie, as well as the most heavily African American and inner parts of Oklahoma City and Tulsa. With a population of 8.6% Native American in the state, it is also worth noting most Native American precincts vote Democratic in margins exceeded only by African Americans.Following the 2000 census, the Oklahoma delegation to the U.S. House of Representatives was reduced from six to five representatives, each serving one congressional district. In the current Congress, all but one of Oklahoma's entire delegation are Republicans.

What's the last name of the Democratic candidate other than Clinton who won 40% or more of Oklahoma's popular vote in 1988 or 1996?