Question:  Der Bärenhäuter was influenced by the German composer who created which opera?

full_context: Document 1: Königskinder: Königskinder (German for "The King's Children") is a stage work by Engelbert Humperdinck that exists in two versions: as a melodrama and as an opera or more precisely a "Märchenoper". The libretto was written by Ernst Rosmer (pen name of Else Bernstein-Porges), adapted from her play of the same name.
Document 2: Siegfried (opera): Siegfried, WWV 86C, is the third of the four music dramas that constitute "Der Ring des Nibelungen" ("The Ring of the Nibelung"), by Richard Wagner. It premiered at the Bayreuth Festspielhaus on 16 August 1876, as part of the first complete performance of "The Ring" cycle.
Document 3: Kaspar Bausewein: Kaspar Bausewein (15 November 1838, Aub – 18 November 1903, Munich) was a German operatic bass who was active at the Bavarian State Opera from 1858 through 1900. While there, he notably portrayed several characters in the world premieres of operas composed by Richard Wagner. He created Pogner in "Die Meistersinger von Nürnberg" (June 21, 1868), Fafner in "Das Rheingold" (September 22, 1869), Hunding in "Die Walküre" (June 26, 1870), and Harald in "Die Feen" (June 29, 1888).
Document 4: Engelbert Humperdinck (composer): Engelbert Humperdinck (] ; 1 September 1854 – 27 September 1921) was a German composer, best known for his opera "Hansel and Gretel".
Document 5: Jacques Offenbach: Jacques Offenbach (] ; ] ; 20 June 1819 – 5 October 1880) was a German-born French composer, cellist and impresario of the romantic period. He is remembered for his nearly 100 operettas of the 1850s–1870s and his uncompleted opera "The Tales of Hoffmann". He was a powerful influence on later composers of the operetta genre, particularly Johann Strauss, Jr. and Arthur Sullivan. His best-known works were continually revived during the 20th century, and many of his operettas continue to be staged in the 21st. "The Tales of Hoffman" remains part of the standard opera repertory.
Document 6: Der Bärenhäuter: Der Bärenhäuter (German "Bearskin man") may refer to:
Document 7: Schneewittchen (opera): Schneewittchen (Snow White) is an opera by Heinz Holliger. He wrote the libretto based on a poetic text by Robert Walser in iambic trimeter. The opera received its première on 17 October 1998 at the Zurich Opera House which had commissioned the work. The work is a psychoanalytical reworking of the fairy tale, analysing the complex relationships between the roles. It is not a .
Document 8: Der Bärenhäuter (opera): Der Bärenhäuter is an 1899 German-language opera by Siegfried Wagner based on the German folk tale Der Bärenhäuter, or the Bearskin man. As with most of Siegfried Wagner's operas it is more influenced by his teacher Humperdinck than his father Richard Wagner's operas.
Document 9: Heinrich Marschner: Heinrich August Marschner (16 August 1795 – 14 December 1861) was the most important composer of German opera between Weber and Wagner.
Document 10: Bearskin (film): Der Bärenhäuter is a German movie from the year 1986, based on the fairy tale "Bearskin".
Document 11: The Story of Sigurd the Volsung and the Fall of the Niblungs: The Story of Sigurd the Volsung and the Fall of the Niblungs
Document 12: Hans Heiling: Hans Heiling is a German Romantic opera in 3 acts with prologue by Heinrich Marschner with a libretto by Eduard Devrient, who also sang the title role at the première at the Königliche Hofoper (now Berlin State Opera), Berlin, on 24 May 1833, and went on to become Marschner's most successful opera. The opera brought the composer a considerable reputation, although this did not materially affect his position in Hanover, where he was music director of the Court Theatre. Like Marschner's other great success, "Der Vampyr", the plot of "Hans Heiling" makes great use of supernatural elements. As with several of his operas, "Hans Heiling" is based on a folk legend.
Document 13: Siegfried Wagner: Siegfried Wagner (6 June 18694 August 1930) was a German composer and conductor, the son of Richard Wagner. He was an opera composer and the artistic director of the Bayreuth Festival from 1908 to 1930.
Document 14: Sigmund Romberg: Sigmund Romberg (July 29, 1887 – November 9, 1951) was an Austro-Hungarian composer who spent most of his adult life in the United States. He is best known for his musicals and operettas, particularly "The Student Prince" (1924), "The Desert Song" (1926) and "The New Moon" (1928).
Document 15: Arthur Sullivan: Sir Arthur Seymour Sullivan MVO (13 May 1842 – 22 November 1900) was an English composer. He is best known for his series of 14 operatic collaborations with the dramatist W. S. Gilbert, including "H.M.S. Pinafore", "The Pirates of Penzance" and "The Mikado". His works include 23 operas, 13 major orchestral works, eight choral works and oratorios, two ballets, incidental music to several plays, and numerous hymns and other church pieces, songs, and piano and chamber pieces. The best known of his hymns and songs include "Onward Christian Soldiers" and "The Lost Chord".
ground_truth: "Hansel and Gretel"