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.

[EX Q]: Passage: Opeth was formed as a death metal band in 1989 in Stockholm, Sweden, by lead vocalist David Isberg. Isberg asked former Eruption band member Mikael Åkerfeldt, who was just 16 years old at the time, to join Opeth as a bassist. When Åkerfeldt showed up to practice on the day after Isberg invited him, it became clear that Isberg had not told the band members, including the band's current bassist, that Åkerfeldt would be joining the band. An ensuing argument led to all members but Isberg and Åkerfeldt leaving to form a new project. The band name was derived from the word "Opet", taken from the Wilbur Smith novel The Sunbird. In this novel, Opet is the name of a fictional Phoenician city in South Africa translated as "City of the Moon".
Isberg and Åkerfeldt recruited drummer Anders Nordin, bassist Nick Döring, and guitarist Andreas Dimeo. Unsatisfied with Opeth's slow progress, Döring and Dimeo left the band after their first performance, and were replaced by guitarist Kim Pettersson and bassist Johan De Farfalla. After the next show, De Farfalla left Opeth to spend time with his girlfriend in Germany, and was initially replaced by Mattias Ander, before Åkerfeldt's friend Peter Lindgren took on the role of bassist. Rhythm guitarist Kim Pettersson left following the band's next performance, and Lindgren switched to guitar, with the role of bassist falling to Stefan Guteklint. The following year, David Isberg left the band citing "creative differences".Following Isberg's departure, Åkerfeldt took over vocal duties and he, Lindgren, and Nordin spent the next year writing and rehearsing new material. The group began to rely less on the blast beats and aggression typical of death metal, and incorporated acoustic guitars and guitar harmonies into their music; developing the core sound of Opeth. Bassist Guteklint was dismissed by the band after they signed their first record deal with Candlelight Records in 1994. Opeth initially employed former member De Farfalla as a session bassist for their demo recordings, and he went on to join on a full-time basis following the release of Opeth's debut album, "Orchid", in 1995.
[EX A]: What is the last name of the bassist who replaced the band member that was dismissed in 1994?

[EX Q]: Passage: In the late 19th and early 20th centuries, child vaudevillian Buster Keaton stays in boarding houses, rides in train boxcars, and performs with his mother and father in a knock-about (physical comedy) act called The Three Keatons. As a young man Keaton travels on his own to Hollywood and tricks his way onto the grounds of silent-film studio Famous Studio as a workman carrying a board, as in one of his trademark comic bits. 
Sneaking onto a set, he attracts the attention of a young casting director, Gloria Brent. He demonstrates his type of physical comedy to a director Kurt Bergner, whom he does not impress. But Gloria recognizes his talent and recommends him to studio head Larry Winters, who offers him a contract. Keaton begins to get small parts in other people's pictures. As his comic talent becomes more apparent and his fame and money-making power grows, he is offered a contract to direct and star in his own silent films.
Dissatisfied with not sharing the profits of his films, he is told that he must invest in his own pictures in order to profit-share. He does in "The Gambler", which is released at the same time as Al Jolson's blockbuster talkie, "The Jazz Singer", reducing public interest in it. Buster struggles to adapt to performing in talking pictures.
[EX A]: What is the full name of the person who fails to impress Kurt Bergner?

[EX Q]: Passage: The Sitwells looked after their protégé both materially and culturally, giving him not only a home but a stimulating cultural education. He took music lessons with Ernest Ansermet, Ferruccio Busoni and Edward J. Dent. He attended the Russian ballet, met Stravinsky and Gershwin, heard the Savoy Orpheans at the Savoy Hotel and wrote an experimental string quartet heavily influenced by the Second Viennese School that was performed at a festival of new music at Salzburg in 1923. Alban Berg heard the performance and was impressed enough to take Walton to meet Arnold Schoenberg, Berg's teacher and the founder of the Second Viennese School.In 1923, in collaboration with Edith Sitwell, Walton had his first great success, though at first it was a succès de scandale. Façade was first performed in public at the Aeolian Hall, London, on 12 June. The work consisted of Edith's verses, which she recited through a megaphone from behind a screen, while Walton conducted an ensemble of six players in his accompanying music. The press was generally condemnatory. Walton's biographer Michael Kennedy cites as typical a contemporary headline: "Drivel That They Paid to Hear". The Daily Express loathed the work, but admitted that it was naggingly memorable. The Manchester Guardian wrote of "relentless cacophony". The Observer condemned the verses and dismissed Walton's music as "harmless". In The Illustrated London News, Dent was much more appreciative: "The audience was at first inclined to treat the whole thing as an absurd joke, but there is always a surprisingly serious element in Miss Sitwell's poetry and Mr Walton's music ... which soon induced the audience to listen with breathless attention." In The Sunday Times, Ernest Newman said of Walton, "as a musical joker he is a jewel of the first water".Among the audience were Evelyn Waugh, Virginia Woolf and Noël Coward. The last was so outraged by the avant-garde nature of Sitwell's verses and the staging, that he marched out ostentatiously during the performance. The players did not like the music: the clarinettist, Charles Draper asked the composer, "Mr Walton, has a clarinet player ever done you an injury?" Nevertheless, the work soon became accepted, and within a decade Walton's music was used for the popular Façade ballet, choreographed by Frederick Ashton.
[EX A]:
What is the last name of the person who asked the composer that  met Stravinsky and Gershwin whether "...a clarinet player ever done you an injury?"?