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.

Example Input: Passage: Wood was born in Oxford Street, London, the only child of Henry Joseph Wood and his wife Martha, nee Morris. Wood senior had started in his family's pawnbroking business, but by the time of his son's birth he was trading as a jeweller, optician and engineering modeller, much sought-after for his model engines. It was a musical household: Wood senior was an amateur cellist and sang as principal tenor in the choir of St Sepulchre-without-Newgate, known as "the musicians' church". His wife played the piano and sang songs from her native Wales. They encouraged their son's interest in music, buying him a Broadwood piano, on which his mother gave him lessons. The young Wood also learned to play the violin and viola.
Wood received little religious inspiration at St Sepulchre, but was deeply stirred by the playing of the resident organist, George Cooper, who allowed him into the organ loft and gave him his first lessons on the instrument. Cooper died when Wood was seven, and the boy took further lessons from Cooper's successor, Edwin M. Lott, for whom Wood had much less regard. At the age of ten, through the influence of one of his uncles, Wood made his first paid appearance as an organist at St Mary Aldermanbury, being paid half a crown. In June 1883, visiting the Fisheries Exhibition at South Kensington with his father, Wood was invited to play the organ in one of the galleries, making a good enough impression to be engaged to give recitals at the exhibition building over the next three months. At this time in his life, painting was nearly as strong an interest as music, and he studied in his spare time at the Slade School of Fine Art. He remained a life-long amateur painter.After taking private lessons from the musicologist Ebenezer Prout, Wood entered the Royal Academy of Music at the age of seventeen, studying harmony and composition with Prout, organ with Charles Steggall, and piano with Walter Macfarren. It is not clear whether he was a member of Manuel Garcia's singing class, but it is certain that he became its accompanist and was greatly influenced by Garcia. Wood also accompanied the opera class, taught by Garcia's son Gustave. Wood's ambition at the time was to become a teacher of singing, and he gave singing lessons throughout his life. He attended the classes of as many singing teachers as he could, although by his own account, "I possess a terrible voice. Garcia said it would go through a brick wall. In fact, a real conductor's voice.".
Question: What is the last name of the person whose mother gave him piano lessons?
Example Output: Wood.

Example Input: 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?
Example Output: Shostakovich.

Example Input: Passage: A modern-day Texas community is overrun by vicious prehistoric raptors and a group of people try to survive the raptor onslaught at a cattle ranch.In Fossil Ridge, Texas, a reclusive , Dr. Cane experimenting with bird DNA, managed to create several species of carnivorous dinosaurs. One of them gets loose and causes a string of killings, drawing the attention of the police and the FBI who send two agents to investigate.
Abbi Whitecloud, a waitress and aspiring singer whose mother was one of the casualties, is forced to work for her demanding boss, Eddie Wayne to pay off a debt. Entering Fossil Ridge are college buddies Sheldon, Lucas, and "Manbeast", who run out of gas, and touring band Little Willie and the Willettes, who suffer engine trouble. Abbi agrees to take Sheldon and Manbeast to the rancher's property for gasoline. They are accompanied by Willie's drummer, Kolin. The rancher suffers a heart attack and Manbeast is devoured after accidentally releasing the rest of the dinosaurs.
Abbi, Sheldon, and Kolin return to Abbi's house to find her boss there, who is subsequently eaten by a T-rex. It then trashes Abbi's house while going after her and her friends. As they escape, they are chased by a pair of Megalosaurs, but Abbi is able to fend them off with a bow and arrows. They return to the gas station to find Lucas as the only survivor; Willie and Willie's band member, Josie has been killed by raptors. After attempting to escape in Willie's broken down tour bus, they are trapped by the dinosaurs and hide in a store. Kolin finds a book containing the dinosaurs' origins. Lucas is eaten by the T-rex in an attempt to fight it. A few hours later, the others escape the store and make it to a factory while the dinosaurs converge and fight one another, with the Megalosaurus emerging victorious.
Question: Who is the college buddy responsible for unleashing the rest of the dinosaurs?
Example Output:
Manbeast.