Question: What is the ethnicity of the composer whose music if featured in Excalibur

Context paragraphs:
Richard Wagner: Wilhelm Richard Wagner ( ; ] ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is primarily known for his operas (or, as some of his later works were later known, "music dramas").  Unlike most opera composers, Wagner wrote both the libretto and the music for each of his stage works.  Initially establishing his reputation as a composer of works in the romantic vein of Weber and Meyerbeer, Wagner revolutionised opera through his concept of the "Gesamtkunstwerk" ("total work of art"), by which he sought to synthesise the poetic, visual, musical and dramatic arts, with music subsidiary to drama.  He described this vision in a series of essays published between 1849 and 1852.  Wagner realised these ideas most fully in the first half of the four-opera cycle "Der Ring des Nibelungen" ("The Ring of the Nibelung").

Excalibur (film): Excalibur is a 1981 British epic fantasy film directed, produced, and co-written by John Boorman that retells the legend of King Arthur and the knights of the Round Table, based on the 15th century Arthurian romance "Le Morte d'Arthur" by Thomas Malory.  It stars Nigel Terry as Arthur, Nicol Williamson as Merlin, Nicholas Clay as Lancelot, Cherie Lunghi as Guenevere, Helen Mirren as Morgana, Liam Neeson as Gawain, Corin Redgrave as Cornwall, and Patrick Stewart as Leondegrance.  The film is named after the legendary sword of King Arthur that features prominently in Arthurian literature.  The film's soundtrack features the music of Richard Wagner and Carl Orff, along with an original score by Trevor Jones.

Pyotr Ilyich Tchaikovsky: Pyotr Ilyich Tchaikovsky ( ; Russian: Пётр Ильи́ч Чайко́вский ; 25 April/7 May 1840 – 25 October/6 November 1893), often anglicized as Peter Ilich Tchaikovsky, was a Russian composer of the romantic period, some of whose works are among the most popular music in the classical repertoire.  He was the first Russian composer whose music made a lasting impression internationally, bolstered by his appearances as a guest conductor in Europe and the United States.  Tchaikovsky was honored in 1884, by Emperor Alexander III, and awarded a lifetime pension.

Julia Wolfe: Julia Wolfe (born December 18, 1958 in Philadelphia) is an American composer whose music, according to the Wall Street Journal, has "long inhabited a terrain of its own, a place where classical forms are recharged by the repetitive patterns of minimalism and the driving energy of rock."  Her work "Anthracite Fields", an oratorio for chorus and instruments, was awarded the 2015 Pulitzer Prize for Music.  In 2015 Wolfe received the Herb Alpert Award.  In September 2016 Wolfe was named a MacArthur Fellow.

Tamara Gee discography: This is a complete discography of official releases by Tamara Gee, an American-born singer/songwriter and composer whose music includes pop influences.  She is signed in a record label Universal Music and Adam Gee Records.  Her discography includes three studio albums, six singles (including soundtrack singles), four music videos to date.

Alexander Zhurbin: Alexander Zhurbin (Алекса́ндр Бори́сович Журби́н; Tashkent 7 August 1945) is a Russian composer whose music is widely performed all over the former Soviet Union, East Europe and West Europe, Canada and the United States.  He composes in a wide range of forms and styles: from symphonies to pop music, from chamber music to "new wave," from operas and ballets to movie scores and music for the theater.  The list of his works is very long (more than 150 titles).

Jacques Desjardins: Jacques Desjardins is a Canadian composer whose music has been performed by important ensembles internationally like the Toronto Symphony Orchestra and the Ijsbreker Ensemble.  He has won first prize at the Society of Composers, Authors and Music Publishers of Canada composition competition twice and was chosen to represent Canada at the first International Forum of New Music that was organized by the Nouvel Ensemble Moderne.  He was awarded several grants from the Canada Council and has been commissioned to write works for the Arthur-LeBlanc String Quartet, the Ensemble Contemporain de Montréal, the Musica Nova Ensemble, and the Sherbrooke Symphony Orchestra.

Paul Sullivan (composer): Paul Sullivan (born July 31, 1955) is an American pianist and composer whose music blends jazz and classical styles.  He has recorded 14 albums on the River Music label.  He is also a member of the Paul Winter Consort and a regular composer for the Pilobolus Dance Theater.  Sullivan's first major choral work, River, was premiered in 2010 by the Bagaduce Chorale of Blue Hill, Maine.

List of ballets by title: The following is a list of ballets with entries in English Wikipedia.  The entries are sorted alphabetically by ballet title, with the name of the composer (or the composer whose music the ballet is set to) and the year of the first performance.

Dave Douglas (trumpeter): Dave Douglas (born March 24, 1963) is an American jazz trumpeter and composer whose music derives from jazz, classical music, folk music, electronica, and klezmer.

Supporting paragraphs: Excalibur (film) Richard Wagner
Answer: German