Question: Where did the opera in which Iva Pacetti starred as Elena first premier?

Passages:
Marc-Amable Girard (April 25, 1822 – September 12, 1892) was the second Premier of the Western Canadian province of Manitoba, and the first Franco-Manitoban to hold that post.  The "Canadian Parliamentary Guide" lists Girard as having been Premier (or "Chief Minister") from 1871 to 1872, but he did not have this title at the time and was not the government leader.  In 1874, however, Girard led Manitoba's first ministry to be constituted on principles of "responsible government".  In this sense, he may be regarded as the first Premier of Manitoba. Eric Elliott Reece, AC (6 July 190923 October 1999) was Premier of Tasmania on two occasions: from 26 August 1958 to 26 May 1969, and from 3 May 1972 to 31 March 1975.  His 13 years as premier remains the second longest in Tasmania's history, Only Robert Cosgrove has served for a longer period as premier.  He was the first Premier of Tasmania to have been born in the 20th century. Sir Albert Arthur Dunstan, KCMG (26 July 1882 – 14 April 1950) was an Australian politician.  A member of the Country Party (now National Party of Australia), Dunstan was the 33rd premier of Victoria.  His term as premier was the second-longest in the state's history, behind Sir Henry Bolte.  Dunstan, who was premier from 2 April 1935 to 14 September 1943, and again from 18 September 1943 to 2 October 1945, was the first premier of Victoria to hold that office as a position in its own right, and not just an additional duty taken up by the treasurer, attorney-general or Chief Secretary. Philip Francis Little (1824 – October 21, 1897) was the first Premier of Newfoundland Colony between 1855 and 1858.  He was born in Charlottetown, Prince Edward Island.  Little studied law there with Charles Young and was admitted to the bar in 1844.  He came to Newfoundland in 1846 and articled in law.  He got involved in politics only a few years after.  He helped lead the charge for responsible government along with John Kent.  After it was granted in 1854, he went on to run a successful campaign as leader of the predominantly Roman Catholic "Liberal Party".  He became Newfoundland's first Premier in 1855 and served concurrently as the colony's Attorney-General. Mefistofele (] ) is an opera in a prologue, four acts and an epilogue, the only completed opera with music by the Italian composer-librettist Arrigo Boito (there are several completed operas for which he was librettist only).  The opera was given its premiere on 5 March 1868 at La Scala, Milan, under the baton of the composer, despite his lack of experience and skill as a conductor. Chief Obafemi Jeremiah Oyeniyi Awolowo, GCFR (Yoruba: "Ọbáfẹ́mi Awólọ́wọ̀" ; 6 March 1909 – 9 May 1987), was a Nigerian nationalist and statesman who played a key role in Nigeria's independence movement, the First and Second Republics and the Civil War.  He was the first premier of the Western Region and later federal commissioner for finance, and vice chairman of the Federal Executive Council during the Civil War.  He was thrice a major contender for his country's highest office.  A native of Ikenne in Ogun State of south-western Nigeria, he started his career, like some of his well-known contemporaries, as a nationalist in the Nigerian Youth Movement in which he rose to become Western Provincial Secretary.  Awolowo was responsible for much of the progressive social legislation that has made Nigeria a modern nation.  He was the first Leader of Government Business and Minister of Local Government and Finance, and first Premier of the Western Region under Nigeria's parliamentary system, from 1952 to 1959.  He was the official Leader of the Opposition in the federal parliament to the Balewa government from 1959 to 1963.  In recognition of all these, Awolowo was the first individual in the modern era to be named "Leader of the Yorubas" (Yoruba: Asiwaju Awon Yoruba or Asiwaju Omo Oodua). Iva Pacetti (13 December 1898, Prato - 19 January 1981, Milan) was an Italian operatic soprano who had an active international career from 1920-1947.  Trained in Florence and Milan, she made her professional opera debut in her native city at the age of 21 as the title heroine in Giuseppe Verdi's "Aida" at the Teatro Metastasio.  She reprised the role the following year at Loew's Lexington Theatre in New York City.  In 1922 she had a triumphant success at the Teatro Carlo Felice as Elena in Arrigo Boito's "Mefistofele".  Engagements with other important opera houses soon followed, including La Scala, the Teatro Costanzi, the Teatro di San Carlo, the Opéra de Monte-Carlo, the Chicago Civic Opera, the Teatro Colón, the Teatro Municipal in Rio de Janeiro, and the Theatro Municipal in São Paulo.  From 1930-1933 she was committed to the Royal Opera House in London, portraying such roles as Desdemona in "Otello", Leonora in "La forza del destino", and the title role in "Tosca".  The latter years of her career were spent performing primarily at La Scala where she was a frequent partner of Beniamino Gigli.  She retired from the stage in 1947, after which she was active as a voice teacher in Milan. The 2011–12 Premier League (known as the Barclays Premier League due to its sponsorship by the Barclays bank) was the 20th season of the Premier League since its establishment in 1992.  The season began on 13 August 2011 and ended on 13 May 2012 with Manchester City sealing their first league title since 1968 with victory over Queens Park Rangers on the final day.  The title was City's first Premier League success, making them the fifth club to win the Premier League in its 20-year history.  City finished level on 89 points with Manchester United, but their goal difference was eight better than their local rivals', making it the first time the Premier League had been won on goal difference and the first time a club previously relegated from the Premier League had won the title. The office of Premier of the Soviet Union (Russian: Глава Правительства СССР ) was synonymous with head of government of the Union of Soviet Socialist Republics (USSR).  Twelve individuals became premier over the time span of the office.  Two of the twelve premiers died in office of natural causes (Vladimir Lenin and Joseph Stalin), three resigned (Alexei Kosygin, Nikolai Tikhonov and Ivan Silayev), and three held the offices of party leader and premier simultaneously (Lenin, Stalin and Nikita Khrushchev).  The first premier was Lenin, who was inaugurated in 1922 after the Treaty on the Creation of the USSR.  Ivan Silayev spent the shortest time in office at 126 days in 1991.  At over fourteen years, Kosygin spent the longest time in office, and became the only premier to head more than two government cabinets; he died shortly after his resignation in 1980. The Premier of Saskatchewan is the first minister for the Canadian province of Saskatchewan.  They are the province's head of government and "de facto" chief executive.  The current Premier of Saskatchewan is Brad Wall, who was sworn in as premier on November 21, 2007 after winning the provincial election.  The first Premier of Saskatchewan was Thomas Walter Scott, who served from 1905–1916.  Since Saskatchewan joined Confederation as a province in 1905, 14 individuals have served as premier.

Supporting sentences:
Mefistofele (] ) is an opera in a prologue, four acts and an epilogue, the only completed opera with music by the Italian composer-librettist Arrigo Boito (there are several completed operas for which he was librettist only).  The opera was given its premiere on 5 March 1868 at La Scala, Milan, under the baton of the composer, despite his lack of experience and skill as a conductor.