instruction:
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.
question:
Passage: After graduation, Shostakovich initially embarked on a dual career as concert pianist and composer, but his dry style of playing was often unappreciated (his American biographer, Laurel Fay, comments on his "emotional restraint" and "riveting rhythmic drive"). He nevertheless won an "honorable mention" at the First International Chopin Piano Competition in Warsaw in 1927. He attributed the disappointment at the competition to suffering from appendicitis and the jury being all-Polish. He had his appendix removed in April 1927. After the competition Shostakovich met the conductor Bruno Walter, who was so impressed by the composer's First Symphony that he conducted it at its Berlin premiere later that year. Leopold Stokowski was equally impressed and gave the work its U.S. premiere the following year in Philadelphia and also made the work's first recording.
Shostakovich concentrated on composition thereafter and soon limited his performances primarily to those of his own works. In 1927 he wrote his Second Symphony (subtitled To October), a patriotic piece with a great pro-Soviet choral finale. Owing to its experimental nature, as with the subsequent Third Symphony, it was not critically acclaimed with the enthusiasm given to the First.
1927 also marked the beginning of Shostakovich's relationship with Ivan Sollertinsky, who remained his closest friend until the latter's death in 1944. Sollertinsky introduced the composer to the music of Mahler, which had a strong influence on his music from the Fourth Symphony onwards.
While writing the Second Symphony, Shostakovich also began work on his satirical opera The Nose, based on the story by Nikolai Gogol. In June 1929, against the composer's own wishes, the opera was given a concert performance; it was ferociously attacked by the Russian Association of Proletarian Musicians (RAPM). Its stage premiere on 18 January 1930 opened to generally poor reviews and widespread incomprehension among musicians.In the late 1920s and early 1930s, Shostakovich worked at TRAM, a proletarian youth theatre. Although he did little work in this post, it shielded him from ideological attack. Much of this period was spent writing his opera, Lady Macbeth of the Mtsensk District, which was first performed in 1934. It was immediately successful, on both popular and official levels. It was described as "the result of the general success of Socialist construction, of the correct policy of the Party", and as an opera that "could have been written only by a Soviet composer brought up in the best tradition of Soviet culture".Shostakovich married his first wife, Nina Varzar, in 1932. Initial difficulties led to a divorce in 1935, but the couple soon remarried when Nina became pregnant with their first child, Galina. 
Question: What is the name of the composer whose First Symphony was conducted by Bruno Walter at its Berlin premiere?
answer:
Shostakovich.


question:
Passage: English-Tamil musician M.I.A. (Mathangi "Maya" Arulpragasam) released her second album Kala in 2007, which achieved widespread critical acclaim, and was certified gold in the United States and silver in the United Kingdom. Six months after giving birth to her son Ikyhd in February 2009, she began composing and recording her third studio album in a home studio section of the Los Angeles house she had bought with her partner Ben Bronfman. She used instruments such as the portable dynamic-phrase synthesizer Korg Kaossilator to compose. She took the beat machine and began recording atop Mayan pyramids in Mexico. Much of the work on the album was undertaken at her house in Los Angeles, in what she called a "commune environment", before it was completed in a rented studio in Hawaii. She collaborated with writer-producer Blaqstarr because, in her opinion, "he simply makes good music". M.I.A.'s collaboration with Derek E. Miller of Sleigh Bells on the track "Meds and Feds" prompted her subsequent signing of the band to her label N.E.E.T., and according to Miller, this experience gave him the confidence to record the band's debut album Treats.Her creative partnership with the comparatively unknown Rusko grew from a sense of frustration at what she saw as her now more mainstream associates suggesting sub-standard tracks due to their busy schedules. Diplo worked on the track "Tell Me Why", but at a studio in Santa Monica rather than at the house. He claimed in an interview that, following the break-up of his personal relationship with M.I.A. some years earlier, he was not allowed to visit the house because "her boyfriend really hates me".Tracks for the album were whittled down from recording sessions lasting up to 30 hours. Producer Rusko, who played guitar and piano on the album, described the pair getting "carried away" in the studio, appreciating the "mad distorted and hectic" sound they were able to create. Rusko said "She's got a kid, a little one year old baby, and we recorded his heart beat. We'd just think of crazy ideas". Rusko has described M.I.A. as the best artist he has ever worked with, saying that she had "been the most creative and I really had a good time making music with her". 
Question: What is the name of the person that had their hear beat recorded?
answer:
Ikyhd.


question:
Passage: Three years after the destruction of the Death Star, the Rebel Alliance, led by Princess Leia, has set up a new base on the ice planet of Hoth. The Imperial fleet, led by Darth Vader, continues to hunt for the new Rebel base by dispatching probe droids across the galaxy. Luke Skywalker is captured by a wampa while investigating one such probe, but manages to escape from the wampa's lair with his lightsaber. Before Luke succumbs to hypothermic sleep, the Force ghost of his late mentor, Obi-Wan Kenobi, instructs him to go to Dagobah to train under Jedi Master Yoda. Han Solo locates Luke and cuts open the tauntaun he rode there on to keep his friend warm; they wait there until being rescued by a search party the next morning.
Meanwhile, the probe alerts the Imperial fleet to the Rebels' location. The Empire launches a large-scale attack using AT-AT walkers to capture the base, which forces the Rebels to retreat. Han and Leia escape with C-3PO and Chewbacca on the Millennium Falcon, but the ship's hyperdrive malfunctions. They hide in an asteroid field, where Han and Leia grow closer amidst tension and briefly kiss. Vader summons bounty hunters to assist in finding the Falcon. Luke, meanwhile, escapes with R2-D2 in his X-wing fighter and crash-lands on the swamp planet of Dagobah. He meets a diminutive creature who reveals himself to be Yoda; after conferring with Obi-Wan's spirit, Yoda reluctantly accepts Luke as his student. 
Question: Who is told to go train under Yoda?
answer:

Luke.