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.

Q: Passage: By the late 1950s, Covent Garden was gradually abandoning its policy of productions in the vernacular; such singers as Maria Callas would not relearn their roles in English. This made it easier for Tucker to point up the difference between the two London opera companies. While Covent Garden engaged international stars, Sadler's Wells focused on young British and Commonwealth performers. Colin Davis was appointed musical director in succession to Gibson in 1961. The repertoire continued to mix familiar and unfamiliar operas. Novelties in Davis's time included Pizzetti's Murder in the Cathedral, Stravinsky's Oedipus rex, Richard Rodney Bennett's The Mines of Sulphur and more Janáček. Sadler's Wells's traditional policy of giving all operas in English continued, with only two exceptions: Oedipus rex, which was sung in Latin, and Monteverdi's L'Orfeo, sung in Italian, for reasons not clear to the press. In January 1962, the company gave its first Gilbert and Sullivan opera, Iolanthe, on the day on which the Savoy operas came out of copyright and the D'Oyly Carte monopoly ended.  The production was well received (it was successfully revived for many seasons until 1978) and was followed by a production of The Mikado in May of the same year.The Islington theatre was by now clearly too small to allow the company to achieve any further growth. A study conducted for the Arts Council reported that in the late 1960s the two Sadler's Wells companies comprised 278 salaried performers and 62 guest singers. The company had experience of playing in a large West End theatre, such as its 1958 sell-out production of The Merry Widow that had transferred to the 2,351-seat London Coliseum for a summer season. Ten years later, the lease of the Coliseum became available.  Stephen Arlen, who had succeeded Tucker as managing director, was the primary advocate for moving the company. After intense negotiations and fund-raising, a ten-year lease was signed in 1968.  One of the company's last productions at the Islington theatre was Wagner's The Mastersingers, conducted by Goodall in 1968, which 40 years later was described by Gramophone magazine as "legendary". The company left Sadler's Wells with a revival of the work with which it had re-opened the theatre in 1945, Peter Grimes. Its last performance at the Rosebery Avenue theatre was on 15 June 1968. 
Question: What theatre did the Sadler's Wells company perform prior to 1968?

A: Islington theatre.
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Q: Passage: Balakirev's despotism strained the relationship between him and Tchaikovsky but both men still appreciated each other's abilities. Despite their friction, Balakirev proved the only man to persuade Tchaikovsky to rewrite a work several times, as he would with Romeo and Juliet. At Balakirev's suggestion, Tchaikovsky based the work on Balakirev's King Lear, a tragic overture in sonata form after the example of Beethoven's concert overtures. It was Tchaikovsky's idea to reduce the plot to one central conflict and represent it musically with the binary structure of sonata form. However, the execution of that plot in the music we know today came only after two radical revisions. Balakirev discarded many of the early drafts Tchaikovsky sent him and, with the flurry of suggestions between the two men, the piece was constantly in the mail between Moscow and Saint Petersburg.Tchaikovsky allowed the first version to be premiered by Nikolai Rubinstein on March 16, 1870, after the composer had incorporated only some of Balakirev's suggestions. The premiere was a disaster. Stung by this rejection, Tchaikovsky took Balakirev's strictures to heart. He forced himself to reach beyond his musical training and rewrote much of the music into the form we know it today. Romeo would bring Tchaikovsky his first national and international acclaim and become a work the kuchka lauded unconditionally. On hearing the love theme from Romeo, Stasov told the group, "There were five of you; now there are six". Such was the enthusiasm of the Five for Romeo that at their gatherings Balakirev was always asked to play it through at the piano. He did this so many times that he learned to perform it from memory.Some critics, among them Tchaikovsky biographers Lawrence and Elisabeth Hanson, have wondered what would have happened if Tchaikovsky had joined Balakirev in 1862 instead of attending the Conservatory. They suggest that he might have developed much more quickly as an independent composer, and offer as proof the fact that Tchaikovsky did not write his first wholly distinct work until Balakirev goaded and inspired him to write Romeo. How well Tchaikovsky might have developed in the long run is another matter. He owed much of his musical ability, including his skill at orchestration, to the thorough grounding in counterpoint, harmony and musical theory he received at the Conservatory. Without that grounding, Tchaikovsky might not have been able to write what would become his greatest works. 
Question: What was the first names of Tchaikovsky's two biographers?

A: Lawrence.
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Q: Passage: Blood Sugar Sex Magik was written at a more rapid pace than the band's previous album. Before the Chili Peppers relocated into the mansion, Frusciante and Kiedis collaborated at each other's homes, in order to arrange song structures and guitar riffs. The band then presented ideas to Flea and Smith, and as a whole, they decided on what they would use for the bass, guitar, vocal and percussion ensembles.
Kiedis focused lyrically on sexual references and innuendos, as they were frequently on his mind. Songs such as "Suck My Kiss", "If You Have to Ask", "Sir Psycho Sexy", "Give It Away" and "Blood Sugar Sex Magik" all contained various sexual links, with lyrics like "A state of sexual light / Kissing her virginity / My affinity" and "Glorious euphoria / Is my must / Erotic shock / Is a function of lust." The concept behind "The Greeting Song" was a request that Rubin had made. Rubin asked Kiedis to write a song solely about girls and cars. Although Kiedis disliked the concept, he wrote the song as Rubin requested and ended up disliking almost every one of the lyrics' aspects. Kiedis also began writing songs about anguish, and the self mutilating thoughts he experienced thanks to his addiction to both heroin and cocaine; he believed that his life had come to its lowest point under a bridge in downtown Los Angeles. Over a month later, Rubin stumbled upon a poem that eventually become the lyrics to "Under the Bridge". Also, he suggested that Kiedis would show it to the band's other members. However, Kiedis was apprehensive because he thought the lyrics were "too soft" and different from the band's style. After singing the verse to Frusciante and Smith, the band started working on the song's structure the next day. Both Rubin and Kiedis worked several hours on arranging the song's chords and melodies until they both accepted it as complete. Frusciante ultimately chose the chords he played in the intro so it could balance out the song's depressing atmosphere: "my brain interpreted it as being a really sad song so I thought if the lyrics are really sad like that I should write some chords that are happier." "Naked in the Rain" was among the first songs that the band wrote for the album. The Chilli Peppers even played once at the end of the Mother's Milk Tour in 1990, while the intros for "The Greeting Song" and "Sir Psycho Sexy" were also teased during the end of that tour; however, neither song was completed or had lyrics. 
Question: What is the name of the person whose addiction to both heroin and cocaine contributed to the self-mutilating thoughts he experienced?

A:
Kiedis.
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