Question: Which Italian poet served as a teacher to the Archduchess of Austria?

full_context: Document 1: Archduchess Maria Dorothea of Austria: Archduchess Maria Dorothea of Austria, full German name: "Maria Dorothea Amalie, Erzherzogin von Österreich" (Maria Dorothea Amalie; 14 June 1867 – 6 April 1932) was a member of the Hungarian line of the House of Habsburg and an Archduchess of Austria by birth. Through her marriage to Philippe, Duke of Orléans, Maria Dorothea was also a member of the House of Orléans. Philippe was the Orléanist claimant to the throne of France from 1894 to 1926 and known to Orléanist monarchists as "Philippe VIII of France." Thus, to Orléanist monarchists, Maria Dorothea was titular Queen of France from 1896 to 1926, and Dowager Queen of France until her death in 1932.
Document 2: Archduchess Maria Anna of Austria (1610–1665): Archduchess Maria Anna of Austria (German: "Maria Anna von Habsburg, Erzherzogin von Österreich", also known as "Maria Anna von Bayern" or "Maria-Anna, Kurfürstin von Bayern"; 13 January 1610 – 25 September 1665), was by birth Archduchess of Austria and member of the House of Habsburg and by marriage Electress of Bavaria.
Document 3: Gaspare Pacchierotti: Details of his early life are scarce. It is possible that he studied with Mario Bittoni, "maestro di cappella" in the cathedral of his home city. Under the stage name of Porfirio Pacchierotti, he made his début in Baldassare Galuppi's opera "Le nozze di Dorina" at the Teatro dei Nobili in Perugia during the carnival season of 1759, playing, as young castrati often did, a female role: Livietta. He made further appearances under his assumed name in Venice (1764) and Innsbruck (1765). On this latter occasion he sang Acronte in Hasse's "Romolo ed Ersilia" on the occasion of the marriage of Peter Leopold of Habsburg-Lorraine, future Grand Duke of Tuscany and Holy Roman Emperor, and the Infanta Maria Luisa of Spain. Here, for the first time, he encountered the famous castrato Gaetano Guadagni, then at the height of his career.
Document 4: Giovanni Claudio Pasquini: Giovanni Claudio Pasquini (1695 – 1763) was an Italian poet and librettist. Born in Siena, he served at the court of Charles VI, Holy Roman Emperor in Vienna, first as the Italian teacher to Maria Theresa and her younger sister Maria Anna, and from 1633 as the court poet. After the death of Charles VI, he worked in the Hapsburg courts of Mannheim and Dresden before returning to Siena in 1749 where he remained for the rest of his life. He wrote the libretti for numerous operas, including Caldara's "I disingannati", as well as courtly entertainments and oratorios. From 1754 he devoted himself to religious life and lost his sight the following year. He was appointed vice-rector of the University of Siena in 1758, but his last years were marked by financial worries when his nephew died and Pasquini became to the sole support of his five children.
Document 5: Claudio Monteverdi: Claudio Giovanni Antonio Monteverdi (] ; 15 May 1567 (baptized) – 29 November 1643) was an Italian composer, string player and choirmaster. A composer of both secular and sacred music, and a pioneer in the development of opera, he is considered a crucial transitional figure between the Renaissance and the Baroque periods of music history.
Document 6: Lost operas by Claudio Monteverdi: The Italian composer Claudio Monteverdi (1567–1643), in addition to a large output of church music and madrigals, wrote prolifically for the stage. His theatrical works were written between 1604 and 1643 and included ten operas, of which three—"L'Orfeo" (1607), "Il ritorno d'Ulisse in patria" (1640) and "L'incoronazione di Poppea" (1643)—have survived with their music and librettos intact. In the case of the other seven operas, the music has disappeared almost entirely, although some of the librettos exist. The loss of these works, written during a critical period of early opera history, has been much regretted by commentators and musicologists.
Document 7: Gottlieb Muffat: Gottlieb Muffat (April 1690 – 9 December 1770), son of Georg Muffat, served as "Hofscholar" under Johann Fux in Vienna from 1711 and was appointed to the position of third court organist at the "Hofkapelle" in 1717. He acquired additional duties over time including the instruction of members of the Imperial family, among them the future Empress Maria Theresa. He was promoted to second organist in 1729 and first organist upon the accession of Maria Theresa to the throne in 1741. He retired from official duties at the court in 1763.
Document 8: Giovanni Filippo Apolloni: Giovanni Filippo Apolloni ( 1620 – 15 May 1688) was an Italian poet and librettist. Born in Arezzo, he has sometimes been referred to as "Giovanni Apollonio Apolloni", but the second given name is spurious. He served as the court poet to Ferdinand Charles, Archduke of Austria at Innsbruck form 1653 until 1659. On his return to Italy he entered the service of Cardinal Volumnio Bandinelli. After Bandinelli's death in 1667 Appolloni was in the service of the Chigi family in Rome and Siena for the rest of his life. He wrote the librettos for a number of operas, the most well-known of which were Antonio Cesti's "L'Argia" and "La Dori", as well as several oratorios and the texts for cantatas by both Cesti and Alessandro Stradella.
Document 9: Maria Anna Mozart: Maria Anna Walburga Ignatia Mozart (30 July 1751 – 29 October 1829), called Marianne and nicknamed "Nannerl", was a musician, the older sister of Wolfgang Amadeus Mozart and daughter of Leopold and Anna Maria Mozart.
Document 10: Johanna Maria van der Gheynst: Johanna Maria van der Gheynst (also called "Jeanne Marie van der Gheynst", "Johanna Maria van der Gheenst";  1505 - 15 December 1541) was in 1521-1522, for a short time, the mistress of the Emperor Charles V and bore him a daughter, Margaret of Parma, who was Governor of the Netherlands from 1559 to 1567 and from 1580 to 1583.
Document 11: Archduchess Maria Annunciata of Austria: Archduchess Maria Annunciata of Austria (13 July 1876 – 8 April 1961) was a daughter of Archduke Karl Ludwig of Austria and his third wife Infanta Maria Theresa of Portugal. She was Princess-Abbess of the Theresian Royal and Imperial Ladies Chapter of the Castle of Prague (1894-1918).
Document 12: Antonio Salieri: Antonio Salieri (] ; 18 August 17507 May 1825) was an Italian classical composer, conductor, and teacher. He was born in Legnago, south of Verona, in the Republic of Venice, and spent his adult life and career as a subject of the Habsburg Monarchy.
Document 13: Archduchess Maria Anna of Austria (governor): Archduchess Maria Anna Eleanor Wilhelmina Josepha of Austria (18 September 1718 in Vienna – 16 December 1744 in Brussels) was an Archduchess of Austria and a Princess of Lorraine, the younger sister of Empress Maria Theresa, and a Governor of the Austrian Netherlands.
Document 14: Archduchess Maria Theresa of Austria (1862–1933): Archduchess Maria Theresa of Austria (German: "Maria Theresia Antoinette Immakulata Josepha Ferdinanda Leopoldine Franziska Caroline Isabella Januaria Aloysia Christine Anna, Erzherzogin von Österreich" ) (18 September 1862, Alt-Bunzlau, Bohemia, Austrian Empire – 10 May 1933, Schloss Saybusch, Saybusch, Poland) was a member of the House of Habsburg-Tuscany and Archduchess of Austria, Princess of Tuscany by birth. Maria Theresia was the eldest child and eldest daughter of Archduke Karl Salvator of Austria and his wife Princess Maria Immaculata of Bourbon-Two Sicilies.
Document 15: Archduchess Maria Carolina of Austria (1740–1741): Archduchess Maria Carolina of Austria (full German name: "Maria Carolina Ernestina Antonia Johanna Josefa"; 12 January 1740 – 25 January 1741), was the third child and daughter of Archduchess Maria Theresa of Austria, later Holy Roman Empress and Duke Francis of Lorraine.
ground_truth: Giovanni Claudio Pasquini