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: In turn-of-the-century Oakland, California, the teenaged Myrtle McKinley is expected to follow high school by attending a San Francisco business college. Instead, she takes a job performing with a traveling vaudeville troupe, where she meets and falls in love with singer-dancer Frank Burt.
Frank proposes they marry and also entertain on stage together as an act, which proves very popular. Myrtle retires from show business after giving birth to daughters Iris and Mikie, while her husband goes on tour with another partner.
A few years later, less successful now, Frank persuades his wife to return to the stage. The girls are cared for by their grandmother as their parents leave town for months at a time.
Iris and Mikie are school girls when they are given a trip to Boston to see their parents. Iris meets a well-to-do young man, Bob Clarkman, and is permitted to attend an exclusive boarding school there. She is embarrassed by her parents' profession, however, and mortified at what the reaction will be from Bob and all of her new school friends when they learn that her parents are performing nearby.
Myrtle and Frank take matters into their own hands, arranging with the school to have all of the students attend a show. To her great relief, Iris is delighted when her classmates adore her parents' sophisticated act. By the time she's out of school and ready to marry, Iris wants to go into show business herself.
What is the last name of the person who falls in love with Frank?

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: Tonight (1984), another dance-oriented album, found Bowie collaborating with Tina Turner and, once again, Iggy Pop. It included a number of cover songs, among them the 1966 Beach Boys hit "God Only Knows". The album bore the transatlantic Top 10 hit "Blue Jean", itself the inspiration for a short film that won Bowie a Grammy Award for Best Short Form Music Video, Jazzin' for Blue Jean. Bowie performed at Wembley Stadium in 1985 for Live Aid, a multi-venue benefit concert for Ethiopian famine relief. During the event, the video for a fundraising single was premiered, Bowie's duet with Mick Jagger. "Dancing in the Street" quickly went to number one on release. The same year, Bowie worked with the Pat Metheny Group to record "This Is Not America" for the soundtrack of The Falcon and the Snowman. Released as a single, the song became a Top 40 hit in the UK and US.Bowie was given a role in the 1986 film Absolute Beginners. It was poorly received by critics, but Bowie's theme song, also named "Absolute Beginners", rose to No. 2 in the UK charts. He also appeared as Jareth, the Goblin King, in the 1986 Jim Henson film Labyrinth, for which he wrote five songs. His final solo album of the decade was 1987's Never Let Me Down, where he ditched the light sound of his previous two albums, instead offering harder rock with an industrial/techno dance edge. Peaking at No. 6 in the UK, the album yielded the hits "Day-In, Day-Out" (his 60th single), "Time Will Crawl", and "Never Let Me Down". Bowie later described it as his "nadir", calling it "an awful album". Supporting Never Let Me Down, and preceded by nine promotional press shows, the 86-concert Glass Spider Tour commenced on 30 May. Bowie's backing band included Peter Frampton on lead guitar. Contemporary critics maligned the tour as overproduced, saying it pandered to the current stadium rock trends in its special effects and dancing, although years after the tour's conclusion, critics acknowledged that the tour influenced how other artists performed concerts, including Britney Spears, Madonna, and U2.

Who appeared as Jareth in the film Labyrinth?