Question: The composer of the ballet L'Île Enchantée has composed how many major orchestral works?

Related documents: [0]  [DOC] L'Île Enchantée (literally, The Enchanted Island) is an 1864 ballet by Arthur Sullivan written as a divertissement at the end of Vincenzo Bellini's "La Sonnambula" at Covent Garden. It was choreographed by H. Desplaces. [END] 
[1]  [DOC] 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". [END]  
Answer: 13
13