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.
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Question: Passage: Good Girl Gone Bad received generally favorable reviews from music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 72 based on 17 reviews. Uncut called it a "shiny, trans-atlantic blend of Europop vim, R&B grit and Caribbean bounce." Andy Kellman of AllMusic deemed it quintessential pop music and said each of its tracks was a potential hit. Quentin B. Huff of PopMatters praised the album, describing it as "more raw, perhaps edgier and more risqué" than Rihanna's previous material. Kelefa Sanneh of The New York Times wrote that the album "sounds as if it were scientifically engineered to deliver hits". Peter Robinson of The Observer commended her collaborators for "masking her own shortcomings" and commented that, "While Rihanna lacks her peers' charisma, she's a great vessel for exhilarating mainstream pop." Pitchfork Media's Tom Breihan found the album varied and satisfying. Neil Drumming of Entertainment Weekly felt that, although it "goes bad when Rihanna tries her hand at treacly ballads and glum sentiment", at times Good Girl Gone Bad is a "thrilling throwback to more than a decade ago, when upstart producers haphazardly mashed R&B with hip-hop to create chunky jeep anthems such as Mary J. Blige's 'Real Love'."In a mixed review, Rodney Dugue of The Village Voice felt that the album "never settles on a sound" and only cited its three Timbaland-produced songs as highlights. Although he found the ballads to be improvements from Rihanna's previous albums, Slant Magazine's Sal Cinquemani criticized the lyrics, particularly those written by Justin Timberlake, as an "Achilles' high heel for Rihanna". Alex Macpherson of The Guardian found Rihanna to be "ill-suited" for its dance-pop songs and stated, "The gimmicky samples and pounding beats bury her personality, and the summery reggae of her first two albums is sorely missed." Robert Christgau of MSN Music cited "Umbrella" as a "choice cut", indicating "a good song on an album that isn't worth your time or money".

Answer: What is the full name of the man who found the album that had Timbaland produce on it to have ballads that were improvements from the last album?


Question: Passage: Nathan Ellis, a 9-year-old maths prodigy, has just lost his father in a car accident. Nathan is diagnosed with autism early in the film, and his father was the only one who was able to connect normally with him. Although Nathan values his mother, Julie, he shuns any physical contact with her and treats her as more of a caretaker than a parent. Wanting to make sure Nathan isn't distracted from his studies, Julie enrolls him in advanced classes at a new school. There, he comes under the tutelage of teacher Martin, also a math genius, who now suffers from multiple sclerosis. Martin sees himself in Nathan, once a promising young mind in the field of mathematics, who gave it all up once he was diagnosed with his illness.
Seven years later, Martin is preparing Nathan to compete for a place in the International Mathematical Olympiad, a prestigious high school competition consisting of the world's best young mathematicians. This year, it is to be held at Cambridge, after a two-week math camp in Taiwan where the students will study for the test that determines the winners. Nathan fears he's not good enough to qualify but ends up doing well enough to accompany 15 other British teenagers to Taiwan.
Suddenly thrust out of his comfort zone, Nathan finds himself no longer the smartest math whiz in the room, and his social anxieties nearly paralyze his performance. He has trouble reading the social cues of others and flinches at the slightest physical contact with another person. Nathan is paired with a female Chinese student, Zhang Mei, who slowly helps him adjust to his new surroundings and helps him fight through his fears. By the skin of their teeth, Nathan and Zhang make the cut to compete in Cambridge.

Answer: Who comes under the tutelage of a math genius teacher?


Question: Passage: The infrequency of Tchaikovsky's musical successes, won with tremendous effort, exacerbated his lifelong sensitivity to criticism. Nikolai Rubinstein's private fits of rage critiquing his music, most famously attacking the First Piano Concerto, did not help matters. His popularity grew, however, as several first-rate artists became willing to perform his compositions. Hans von Bülow premiered the First Piano Concerto and championed other Tchaikovsky works both as pianist and conductor. Other artists included Adele Aus der Ohe, Max Erdmannsdörfer, Eduard Nápravník and Sergei Taneyev.
Another factor that helped Tchaikovsky's music become popular was a shift in attitude among Russian audiences. Whereas they had previously been satisfied with flashy virtuoso performances of technically demanding but musically lightweight compositions, they gradually began listening with increasing appreciation of the music itself. Tchaikovsky's works were performed frequently, with few delays between their composition and first performances; the publication from 1867 onward of his songs and great piano music for the home market also helped boost the composer's popularity.During the late 1860s, Tchaikovsky began to compose operas. His first, The Voyevoda, based on a play by Alexander Ostrovsky, premiered in 1869. The composer became dissatisfied with it, however, and, having re-used parts of it in later works, destroyed the manuscript. Undina followed in 1870. Only excerpts were performed and it, too, was destroyed. Between these projects, Tchaikovsky started to compose an opera called Mandragora, to a libretto by Sergei Rachinskii; the only music he completed was a short chorus of Flowers and Insects.The first Tchaikovsky opera to survive intact, The Oprichnik, premiered in 1874. During its composition, he lost Ostrovsky's part-finished libretto. Tchaikovsky, too embarrassed to ask for another copy, decided to write the libretto himself, modelling his dramatic technique on that of Eugène Scribe. Cui wrote a "characteristically savage press attack" on the opera. Mussorgsky, writing to Vladimir Stasov, disapproved of the opera as pandering to the public. Nevertheless, The Oprichnik continues to be performed from time to time in Russia.The last of the early operas, Vakula the Smith (Op.14), was composed in the second half of 1874. The libretto, based on Gogol's Christmas Eve, was to have been set to music by Alexander Serov. With Serov's death, the libretto was opened to a competition with a guarantee that the winning entry would be premiered by the Imperial Mariinsky Theatre. Tchaikovsky was declared the winner, but at the 1876 premiere, the opera enjoyed only a lukewarm reception. After Tchaikovsky's death, Rimsky-Korsakov wrote the opera Christmas Eve, based on the same story.Other works of this period include the Variations on a Rococo Theme for cello and orchestra, the Third and Fourth Symphonies, the ballet Swan Lake, and the opera Eugene Onegin.

Answer:
What is the name of the person whose popularity grew as several first-rate artists became willing to perform his compositions?