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: In 1947, Walton was presented with the Royal Philharmonic Society's Gold Medal. In the same year he accepted an invitation from the BBC to compose his first opera. He decided to base it on Chaucer's Troilus and Criseyde, but his preliminary work came to a halt in April 1948 when Alice Wimborne died. To take Walton's mind off his grief, the music publisher Leslie Boosey persuaded him to be a British delegate to a conference on copyright in Buenos Aires later that year.
 While there, Walton met Susana Gil Passo (1926–2010), daughter of an Argentine lawyer. At 22 she was 24 years younger than Walton (Alice Wimborne had been 22 years his senior), and at first she ridiculed his romantic interest in her. He persisted, and she eventually accepted his proposal of marriage. The wedding was held in Buenos Aires in December 1948. From the start of their marriage, the couple spent half the year on the Italian island of Ischia, and by the mid-1950s they lived there permanently.Walton's last work of the 1940s was his music for Olivier's film of Hamlet (1948). After that, he focused his attentions on his opera Troilus and Cressida. On the advice of the BBC, he invited Christopher Hassall to write the libretto. This did not help Walton's relations with the Sitwells, each of whom thought he or she should have been asked to be his librettist. Work continued slowly over the next few years, with many breaks while Walton turned to other things. In 1950 he and Heifetz recorded the Violin Concerto for EMI. In 1951 Walton was knighted. In the same year, he prepared an authorised version of Façade, which had undergone many revisions since its premiere. In 1953, following the accession of Elizabeth II he was again called on to write a coronation march, Orb and Sceptre; he was also commissioned to write a choral setting of the Te Deum for the occasion.Troilus and Cressida was presented at Covent Garden on 3 December 1954. Its preparation was dogged by misfortunes. Olivier, originally scheduled to direct it, backed out, as did Henry Moore who had agreed to design the production; Elisabeth Schwarzkopf, for whom the role of Cressida had been written, refused to perform it; her replacement, Magda László, had difficulty mastering the English words; and Sargent, the conductor, "did not seem well acquainted with the score". The premiere had a friendly reception, but there was a general feeling that Hassall and Walton had written an old-fashioned opera in an outmoded tradition. The piece was subsequently staged in San Francisco, New York and Milan during the next year, but failed to make a positive impression, and did not enter the regular operatic repertory. 
Question: What is the name of the piece that was staged in San Francisco, New York and Milan but reportedly failed to make a positive impression?
[EX A]: Troilus and Cressida.

[EX Q]: Passage: Gangsters Nat Burdell and Brad Conley (Ewing Miles Brown) kidnap wealthy socialite Margaret Chaffee and, joined by gun moll Esther Malone, head for the San Gabriel Mountains to await the ransom they've demanded from Chaffee's father. That night, geologist Dick Cutler sees what he thinks is a meteor crash into the forest. But he doesn't see that out of the smoke from the impact emerges a beautiful glowing blonde female extraterrestrial in a skintight leotard who can kill by touch.
The gangsters hole up at Cutler's cabin. When the alien peeks through a window, Burdell orders Conley to go after her, but the alien kills Conley, his gunshots having no effect on her whatsoever. Burdell then goes out and runs into the alien himself. Although his gunshots are also ineffective, the alien walks away backwards, allowing Burdell to retrieve Conley's body. Back at the cabin, Cutler says that Conley died of "radium poisoning" and that by carrying his body, Burdell has taken a potentially lethal dose of radium and needs to get to a doctor before he dies.
Burdell decides they should flee that night, even though they'll have to navigate a dangerous mountain road in Cutler's headlight-less Jeep. But before they can leave, the alien smashes through the cabin's window. Everyone runs outside. The alien catches Malone and kills her. When the alien tries to grab Burdell, he quickly sidesteps and she tumbles down an embankment. Burdell wrongly thinks she's dead. Cutler and Chaffee have already run back to the cabin. Burdell demands that they leave at once. But as they drive off, the extraterrestrial stops them and kills Burdell. 
Question: What are the full names of the gangsters who are holed up at Cutler's cabin?
[EX A]: Nat Burdell.

[EX Q]: Passage: Tchaikovsky remained abroad for a year after the disintegration of his marriage. During this time, he completed Eugene Onegin, orchestrated his Fourth Symphony, and composed the Violin Concerto. He returned briefly to the Moscow Conservatory in the autumn of 1879. For the next few years, assured of a regular income from von Meck, he traveled incessantly throughout Europe and rural Russia, mainly alone, and avoided social contact whenever possible. During this time, Tchaikovsky's foreign reputation grew and a positive reassessment of his music also took place in Russia, thanks in part to Russian novelist Fyodor Dostoyevsky's call for "universal unity" with the West at the unveiling of the Pushkin Monument in Moscow in 1880. Before Dostoyevsky's speech, Tchaikovsky's music had been considered "overly dependent on the West". As Dostoyevsky's message spread throughout Russia, this stigma toward Tchaikovsky's music evaporated. An unprecedented acclaim for him even drew a cult following among the young intelligentsia of Saint Petersburg, including Alexandre Benois, Léon Bakst and Sergei Diaghilev.Two musical works from this period stand out. With the Cathedral of Christ the Saviour nearing completion in Moscow in 1880, the 25th anniversary of the coronation of Alexander II in 1881, and the 1882 Moscow Arts and Industry Exhibition in the planning stage, Nikolai Rubinstein suggested that Tchaikovsky compose a grand commemorative piece. Tchaikovsky agreed and finished it within six weeks. He wrote to Nadezhda von Meck that this piece, the 1812 Overture, would be "very loud and noisy, but I wrote it with no warm feeling of love, and therefore there will probably be no artistic merits in it". He also warned conductor Eduard Nápravník that "I shan't be at all surprised and offended if you find that it is in a style unsuitable for symphony concerts". Nevertheless, the overture became, for many, "the piece by Tchaikovsky they know best"., particularly well-known for the use of cannon in the scores.On 23 March 1881, Nikolai Rubinstein died in Paris. That December, Tchaikovsky started work on his Piano Trio in A minor, "dedicated to the memory of a great artist". First performed privately at the Moscow Conservatory on the first anniversary of Rubinstein's death, the piece became extremely popular during the composer's lifetime; in November 1893, it would become Tchaikovsky's own elegy at memorial concerts in Moscow and St. Petersburg. 
Question: What is the first name of the person who assured Tchaikovsky a regular income which he used to travel incessantly throughout Europe and rural Russia?
[EX A]:
Nadezhda.