Question: Italian composer Donizetti's opera "Maria Stuarda" is based on a play by Friedrich Schiller about the final das of which royal figure?

full_context: Document 1: Gaetano Rossi: Gaetano Rossi (18 May 1774 – 25 January 1855) was an Italian opera librettist for several of the well-known "bel canto"-era composers including Gioachino Rossini, Gaetano Donizetti, and Saverio Mercadante in Italy and Giacomo Meyerbeer in one of his early Italian successes. Other composers with whom he worked included Simon Mayr, a composer and Donizetti's teacher, as well as the prolific Giovanni Pacini.
Document 2: Mary Queen of Scots (2013 film): Mary Queen of Scots is a 2013 Swiss period drama directed by Thomas Imbach. It is his first film in English and French language starring the bilingual French actress Camille Rutherford. The film portrays the inner life of Mary, the Queen of Scotland. The film is based on Austrian novelist Stefan Zweig's 1935 biography, Mary Stuart, a long-term bestseller in Germany and France but out of print in the UK and the US for decades until 2010. The film was first screened at the 2013 International Film Festival Locarno and was later shown at the 2013 Toronto International Film Festival.
Document 3: Mary Queen of Scots Got Her Head Chopped Off: Mary Queen of Scots Got Her Head Chopped Off is a 1987 play by Liz Lochhead. It explores the relationship between Elizabeth I of England and Mary Stuart. It is primarily written to be from a female point of view, and is considered to be Lochhead's most successful and critically acclaimed play. According to the BBC website:
Document 4: Sleepwalking scene: The sleepwalking scene is a critically celebrated scene from William Shakespeare's tragedy "Macbeth" (1607?). The first scene in the tragedy's 5th act, the sleepwalking scene is written principally in prose, and follows the guilt-wracked, sleepwalking Lady Macbeth as she recollects horrific images and impressions from her past. The scene is Lady Macbeth's last on-stage appearance, though her death is reported later in the act. Well known phrases from the scene include "Out, damned spot!" and "All the perfumes of Arabia will not sweeten this little hand." The British tragedienne Sarah Siddons (1755 - 1831) was distinguished for her performance and interpretation of the scene.
Document 5: Giacomo Puccini: Giacomo Antonio Domenico Michele Secondo Maria Puccini (] ; 22 December 1858 29 November 1924) was an Italian opera composer who has been called "the greatest composer of Italian opera after Verdi".
Document 6: Vincenzo Bellini: Vincenzo Salvatore Carmelo Francesco Bellini (] ; 3 November 1801 – 23 September 1835) was an Italian opera composer, who was known for his long-flowing melodic lines for which he was named "the Swan of Catania".
Document 7: Gaetano Fraschini: Gaetano Fraschini (16 February 1816 – 23 May 1887) was an Italian tenor. He created many roles in 19th century operas, including five composed by Giuseppe Verdi. His voice was "heroic ... with a baritonal quality, ... yet Verdi and Donizetti appreciated his ability to sing softly and with subtlety." An Italian biographer has pointed out Fraschini's role in extending the longevity of Donizetti's operas, while at the same time accelerating the ascent of Verdi's repertory. He was indeed the most prominent singer who facilitated the transition from Donizetti to Verdi. Fraschini sang over one hundred roles and Verdi placed him at the top of his favorite tenors' list and described him as a "natural Manrico" for his "Il trovatore". Fraschini also played a pivotal role in the success of many operas by Pacini and Mercadante.
Document 8: Mary, Queen of Scots: Mary, Queen of Scots (8 December 1542 – 8 February 1587), also known as Mary Stuart or Mary I, reigned over Scotland from 14 December 1542 to 24 July 1567.
Document 9: Gioachino Rossini: Gioachino Antonio Rossini (] ; 29 February 179213 November 1868) was an Italian composer who wrote 39 operas, as well as some sacred music, songs, chamber music and piano pieces.
Document 10: Maria Stuarda: Maria Stuarda (Mary Stuart) is a tragic opera ("tragedia lirica"), in two acts, by Gaetano Donizetti, to a libretto by Giuseppe Bardari, based on Andrea Maffei's translation of Friedrich Schiller's 1800 play "Maria Stuart".
Document 11: Marino Faliero (opera): Rossini had influenced the management of the Théâtre-Italien to commission works by the outstanding Italian composers of the day—Donizetti and Vincenzo Bellini. Both wrote operas for that house in Paris, Bellini's contribution being the hugely-successful "I puritani". Donizetti's opera, which premiered on 12 March 1835 (a few months after "I puritani") was not nearly as much of a success. However, it marked Donizetti's first opera to have its premiere in Paris.
Document 12: Mary Stuart (play): Mary Stuart (German: "Maria Stuart" ) is a verse play by Friedrich Schiller that depicts the last days of Mary, Queen of Scots. The play consists of five acts, each divided into several scenes. The play had its première in Weimar, Germany on 14 June 1800. The play formed the basis for Donizetti's opera "Maria Stuarda" (1835).
Document 13: Giuseppe Verdi: Giuseppe Fortunino Francesco Verdi (] ; 9 or 10 October 1813 – 27 January 1901) was an Italian opera composer.
Document 14: Simone Schneider: Simone Schneider is a German operatic soprano. As a member of Staatstheater am Gärtnerplatz, she performed coloratura roles such as the Mozart's Queen of the Night. As a member of the Staatsoper Stuttgart from 2006, she has performed a wide range of leading roles including Donizetti's Maria Stuarda and the Feldmarschallin in "Der Rosenkavalier" by Richard Strauss. She performed as a guest in major opera houses in Germany and Europe.
Document 15: Gaetano Donizetti: Domenico Gaetano Maria Donizetti (] ; 29 November 1797 – 8 April 1848) was an Italian composer. Along with Gioachino Rossini and Vincenzo Bellini, Donizetti was a leading composer of the "bel canto" opera style during the first half of the nineteenth century. Donizetti's close association with the bel canto style was undoubtedly an influence on other composers such as Giuseppe Verdi (1813–1901).
ground_truth: Mary, Queen of Scots