In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

[EX Q]: Passage: Hundreds of songs and performers have entered Melodifestivalen since its debut. Although songwriters living outside Sweden were once not allowed to enter Melodifestivalen, the 2012 contest marked the first time foreign songwriters could submit entries, provided that they collaborated with a Swedish songwriter. To be eligible, songwriters and performers must be at least sixteen years of age on the day of the first Eurovision semi-final.Until 2001, participation in the festival was limited to a single night. The number of contestants ranged from five to twelve. A two-round system was used intermittently between 1981 and 1998, in which all but five of the contestants were eliminated in a first round of voting. Failure to reach the second round under this system was seen as a major failure for a prominent artist; when Elisabeth Andreassen failed to qualify in 1984, it almost ended her career. The introduction of weekly semi-finals in 2002 increased the number of contestants to thirty-two. At least ten of the contestants must perform in Swedish. A CD of each year's competing songs has been released since 2001, and a DVD of the semi-finals and final since 2003.
Melodifestivalen has been the launch-pad for the success of popular local acts, such as Anne-Lie Rydé, Tommy Körberg, and Lisa Nilsson. The competition has played host to performers from outside Sweden, including Baccara, Alannah Myles, Katrina Leskanich, and Cornelis Vreeswijk. Melodifestivalen participants have also represented—and unsuccessfully tried to represent—other countries at Eurovision. While local success for Melodifestivalen winners is common, most contestants return to obscurity and few have major international success. The impact that the competition makes on the Swedish charts means an artist need not win the competition to earn significant domestic record sales. For example, the song which finished last at Melodifestivalen 1990, "Symfonin" by Loa Falkman, topped the Swedish singles chart. The most recent occurrence was 2016 with Samir & Viktor's song "Bada Nakna". In 2007, twenty-one participants reached Sverigetopplistan. The week after the 2008 final, songs from the festival made up the entire top fifteen on the domestic singles chart. 
Question: In what year did the Swedish domestic singles chart have 15 songs from the festival that recently allowed foreign entrants in 2012?
[EX A]: 2008.

[EX Q]: Passage: Gloria Wandrous wakes up in the apartment of wealthy executive Weston Liggett and finds that he has left her $250. An insulted Gloria, whose dress is torn, takes Liggett's wife Emily's (Dina Merrill) mink coat to cover herself and scrawls "No Sale" in lipstick on the mirror, but she orders her telephone answering service, BUtterfield 8, to put Liggett through if he calls.
Gloria visits a childhood friend, pianist Steve Carpenter, who chastises her for wasting her life on one-night stands but agrees to ask his girlfriend Norma to lend her a dress. Gloria leaves, and Norma tells Steve to choose between her and Gloria.
Liggett takes a train to the countryside where his wife Emily is caring for her mother. A friend, Bingham Smith, advises him to end his adulterous relationships and return to Bing's law firm instead of working for the chemical business of Emily's father. Meanwhile, Gloria lies to her mother Annie, claiming to have spent the night at Norma's.
Liggett returns home. Finding the lipstick and money, he phones Gloria to explain the money was meant for her to buy a new dress, to replace the one that he had torn. While drinking later that night, Liggett advises her to ask a high price for her lovemaking talents. She insists she does not take payment from her dates and claims she has been hired as a model to advertise the dress she is wearing at three bistros that night. Liggett follows Gloria, watching her flirt with dozens of men at several clubs. He then drives her to a run-down motel. After sleeping together, Liggett and Gloria decide to explore their relationship further. Together for five days, they grow closer, falling genuinely in love with one another and parting only upon the return of Liggett's wife. 
Question: What's the last name of the man who Norma demands a choice from?
[EX A]: Carpenter.

[EX Q]: Passage: From 1916, Nielsen taught at the Royal Academy where he became director in 1931, shortly before his death. He also had private students in his earlier days in order to supplement his income. As a result of his teaching, Nielsen has exerted considerable influence on classical music in Denmark. Among his most successful pupils were the composers Thorvald Aagaard, remembered in particular for his songs, Harald Agersnap, both a conductor and orchestral composer, and Jørgen Bentzon who composed choral and chamber music mainly for his folk music school (Københavns Folkemusikskole). Among his other students were the musicologist Knud Jeppesen, the pianist Herman Koppel, the academy professor and symphony composer Poul Schierbeck, the organist Emilius Bangert who played at Roskilde Cathedral, and Nancy Dalberg, one of Nielsen's private students who helped with the orchestration of Aladdin. Nielsen also instructed the conductor and choirmaster Mogens Wöldike, remembered for his interpretations of Baroque music, and Rudolph Simonsen, the pianist and composer who became director of the Academy after Nielsen's death.The Carl Nielsen Society maintains a listing of performances of Nielsen's works, classified by region (Denmark, Scandinavia, Europe apart from Scandinavia and outside Europe) which demonstrates that his music is regularly performed throughout the world. The concerti and symphonies feature frequently in these listings.
The Carl Nielsen International Competition commenced in the 1970s under the auspices of the Odense Symphony Orchestra. A four-yearly violin competition has been held there since 1980. Flute and clarinet competitions were later added, but these have now been discontinued. An international Organ Competition, founded by the city of Odense, became associated with the Nielsen competition in 2009, but from 2015 will be organized separately, based in Odense Cathedral. 
Question: What is the last name of the person that taught Poul Schierbeck?
[EX A]:
Nielsen.