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.

Input: Consider Input: Passage: The musical and philosophical ideas behind the opera had begun in Tippett's mind several years earlier. The story, which he wrote himself, charts the fortunes of two contrasting couples in a manner which has brought comparisons with Mozart's The Magic Flute. The strain of composition, combined with his continuing responsibilities at Morley and his BBC work, affected Tippett's health and slowed progress. Following the death in 1949 of Morley's principal, Eva Hubback, Tippett's personal commitment to the college waned. His now-regular BBC fees had made him less dependent on his Morley salary, and he resigned his college post in 1951. His farewell took the form of three concerts which he conducted at the new Royal Festival Hall, in which the programmes included A Child of Our Time, the British première of Carl Orff's Carmina Burana, and Thomas Tallis's rarely performed 40-part motet Spem in alium.In 1951 Tippett moved from Limpsfield to a large, dilapidated house, Tidebrook Manor in Wadhurst, Sussex. As The Midsummer Marriage neared completion he wrote a song cycle for tenor and piano, The Heart's Assurance. This work, a long-delayed tribute to Francesca Allinson (who had committed suicide in 1945), was performed by Britten and Pears at the Wigmore Hall on 7 May 1951. The Midsummer Marriage was finished in 1952, after which Tippett arranged some of the music as a concert suite, the Ritual Dances, performed in Basel, Switzerland, in April 1953. The opera itself was staged at Covent Garden on 27 January 1955. The lavish production, with costumes and stage designs by Barbara Hepworth and choreography by John Cranko, perplexed the opera-going public and divided critical opinion. According to Bowen, most "were simply unprepared for a work that departed so far from the methods of Puccini and Verdi". Tippett's libretto was variously described as "one of the worst in the 350-year history of opera" and "a complex network of verbal symbolism", and the music as "intoxicating beauty" with "passages of superbly conceived orchestral writing". A year after the première, the critic A.E.F. Dickinson concluded that "in spite of notable gaps in continuity and distracting infelicities of language, [there is] strong evidence that the composer has found the right music for his ends".Much of the music Tippett composed following the opera's completion reflected its lyrical style. Among these works was the Fantasia Concertante on a Theme of Corelli (1953) for string orchestra, written to commemorate the 300th anniversary of the composer Arcangelo Corelli's  birth. The Fantasia would eventually become one of Tippett's most popular works, though The Times's critic lamented the "excessive complexity of the contrapuntal writing ... there was so much going on that the perplexed ear knew not where to turn or fasten itself". Such comments helped to foster a view that Tippett was a "difficult" composer, or even that his music was amateurish and poorly prepared. These perceptions were strengthened by controversies around several of his works in the late 1950s. The Piano Concerto (1955) was declared unplayable by its scheduled soloist, Julius Katchen, who had to be replaced before the première by Louis Kentner. The Dennis Brain Wind Ensemble, for whom Tippett had written the Sonata for Four Horns (1955), complained that the work was in too high a key and required it to be transposed down. When the Second Symphony was premièred by the BBC Symphony Orchestra under Boult, in a live broadcast from the Royal Festival Hall on 5 February 1958, the work broke down after a few minutes and had to be restarted by the apologetic conductor: "Entirely my mistake, ladies and gentlemen". The BBC's Controller of Music defended the orchestra in The Times, writing that it "is equal to all reasonable demands", a wording that implied the fault was the composer's.

Output: What three things affected Tippett's health?


Input: Consider Input: Passage: The Balts were largely driven to unite by external threats from aggressive German religious orders. In 1202, the Order of the Livonian Brothers of the Sword was established by Albert, the Bishop of Riga, to promote the Christianization and conquest of the Livonians, Curonians, Semigallians, and Estonians near the Gulf of Riga. The Order waged a number of successful campaigns and posed a great danger to the Lithuanian territories. The Order's progress was halted by its defeat at the Battle of Saule in 1236, after which it almost collapsed. The following year, it merged into the Teutonic Knights.In 1226, Konrad I of Masovia invited the Teutonic Knights to defend his borders and subdue the Prussians, offering the Knights the use of Chełmno (Kulm) as a base for their campaign. In 1230, they settled in Chełmno, built a castle, and began attacking Prussian lands. After 44 years, and despite two Prussian uprisings against them, they had conquered most of the Prussian tribes. Afterwards, the Knights spent nine years conquering the Nadruvians, Skalvians, and Yotvingians, and from 1283, they were better positioned to threaten the young Lithuanian state from the west.
Further unification of the Lithuanian tribes was facilitated by the social changes that took place in Lithuania during this period. Private land ownership was established (allodiums, Lithuanian: atolai), which would later evolve into a feudal system. As attested by many chronicles, it was the principal form of organization governing land ownership in the 13th century. Under this system, known in England as primogeniture, only the eldest son could inherit lands, which allowed dukes to consolidate their holdings. Social classes and divisions of labor also began taking shape. There were classes of experienced soldiers (bajoras), of free peasants (laukininkas), and of "unfree" people (kaimynas and šeimynykštis). In order to enforce this social structure, a united state was needed. Another force behind unification was the desire to take advantage of Ruthenian lands, which were suffering from the Mongol invasion. Temporary alliances among Lithuanian dukes often sufficed for military ventures into, and plundering of, these lands (including Pskov, plundered in 1213). Altogether, between 1201 and 1236, Lithuanians launched at least 22 incursions into Livonia, 14 into Rus, and 4 into Poland. The ongoing administration of conquered territories, however, required a strong and unified central power.

Output: What is the full name of the group that posed a great danger to the Lithuanian territories and waged a number of successful campaigns?


Input: Consider Input: Passage: The East German government sought to defuse the situation by relaxing the country's border controls with effect from 10 November 1989; the announcement was made on the evening of 9 November 1989 by Politbüro member Günter Schabowski at a somewhat chaotic press conference in East Berlin, who proclaimed the new control regime as liberating the people from a situation of psychological pressure by legalising and simplifying migration. Misunderstanding the note passed to him about the decision to open the border, he announced the border would be opened "immediately, without delay", rather than from the following day as the government had intended. Crucially, it was neither meant to be an uncontrolled opening nor to apply to East Germans wishing to visit the West as tourists. At an interview in English after the press conference, Schabowski told the NBC reporter Tom Brokaw that "it is no question of tourism. It is a permission of leaving the GDR [permanently]."As the press conference had been broadcast live, within hours, thousands of people gathered at the Berlin Wall demanding that the guards open the gates. The border guards were unable to contact their superiors for instructions and, fearing a stampede, opened the gates. The iconic scenes that followed – people pouring into West Berlin, standing on the Wall and attacking it with pickaxes – were broadcast worldwide.While the eyes of the world were on the Mauerfall (the fall of the Wall) in Berlin, a simultaneous process of Grenzöffnung (border opening) was taking place along the entire length of the inner German border. Existing crossings were opened immediately. Within the first four days, 4.3 million East Germans – a quarter of the country's entire population – poured into West Germany. At the Helmstedt crossing point on the Berlin–Hanover autobahn, cars were backed up for 65 km (40 mi); some drivers waited 11 hours to cross to the West. The border was opened in stages over the next few months. Many new crossing points were created, reconnecting communities that had been separated for nearly 40 years. BBC correspondent Ben Bradshaw described the jubilant scenes at the railway station of Hof in Bavaria in the early hours of 12 November:
It was not just the arrivals at Hof who wore their emotions on their sleeves. The local people turned out in their hundreds to welcome them; stout men and women in their Sunday best, twice or three times the average age of those getting off the trains, wept as they clapped. "These are our people, free at last," they said ... Those arriving at Hof report people lining the route of the trains in East Germany waving and clapping and holding placards saying: 'We're coming soon."
Even the East German border guards were not immune to the euphoria. One of them, Peter Zahn, described how he and his colleagues reacted to the opening of the border:.
Output: What is the full name of the person who had an interview with Brokaw after the press conference?