In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Input: Consider Input: Passage: Alfred Stillé (October 30, 1813 – September 24, 1900) was an American physician. Born in Philadelphia, he studied classics at Yale, but was expelled for participating in the Conic Sections Rebellion. He then transferred to the University of Pennsylvania in the same year, where he received an A.B. degree in 1832. He went on to get an A.M. from the University of Pennsylvania in 1835 and in 1836 an M.D. from the school's department of medicine. He settled to practice in his native city, but spent parts of 1841 and 1851 in Paris and Vienna. From 1854 to 1859 he was professor of medicine at the Pennsylvania Medical College and from 1864 to 1884 at the University of Pennsylvania, later becoming its Chair. Stillé was one of the first in America to distinguish between typhus and typhoid fever. His observations in this connection he made during a typhus epidemic in Philadelphia in 1836 and reported in 1838. He acquired a great reputation as a practitioner, teacher, and writer, and was the first secretary, and in 1871–72 the president, of the American Medical Association. However, as evidenced by his later writings, he was also known for refusing to accept the germ theory or laboratory medicine.
 Link Information: He then transferred to the Question: Of the two universities Alfred attended, which one admits more international students?

Output: Answer: University of Pennsylvania


Input: Consider Input: Passage: Tomić belonged to the first class of six Serbian pilots trained in France in 1912. In August 1914, he participated in the first aerial dogfight of the war, when he exchanged gunfire with an Austro-Hungarian plane over western Serbia. In the winter of 1915, during the Serbian Army's retreat across Albania to the Greek island of Corfu, he evacuated General Petar Bojović from Scutari by plane, delivered mail by air and transported the Serbian Government's gold and hard currency reserves from Niš to keep them from falling into enemy hands. Following the occupation of Serbia by the Central Powers, Tomić went to France and flew over the Western Front, where he had one confirmed kill. He returned to the Balkans in late 1916, conducted combat missions over Bulgarian-occupied Macedonia and shot down one enemy plane. Tomić continued flying after the war and became head of the Royal Yugoslav Air Force's pursuit squadron in Novi Sad. During World War II, he was captured by the Germans and detained as a prisoner of war. Tomić left Yugoslavia following the war and settled in the United States with his wife. He died in Chicago in 1962.
 Link Information: The Central Powers consisted of the German Empire and the Austro-Hungarian Empire at the beginning of the war. The Ottoman Empire joined the Central Powers later in 1914. In 1915, the Kingdom of Bulgaria joined the alliance. Question: How many nations were part of the powers that occupied Serbia?

Output: Answer: 4


Input: Consider Input: Passage: In September 2005, Ball made his New York City Opera debut as Reginald Bunthorne in Gilbert and Sullivan's Patience. He spent the first quarter of 2006 on complete vocal rest, following the illness that caused him to leave The Woman in White on Broadway. By the middle of July, Ball had taken part in the Royal Court Theatre's celebratory performance of The Rocky Horror Show. He took a leading role in Kismet in June and July 2007 for the ENO, and appeared on Channel 4's Richard & Judy on 22 June 2007 to promote this production. He then appeared as the solo artist in a controversial 'Musical Theatre' Prom on 27 August 2007 for the BBC at London's Royal Albert Hall. Ball performed a wide range of musical theatre numbers, including several by Andrew Lloyd Webber. The show was broadcast live on BBC Four, as well as on BBC Radio 3.
 Link Information: Roles.- Colonel Calverley (Officer of Dragoon Guards) (bass-baritone)
- Major Murgatroyd (Officer of Dragoon Guards) (baritone)
- Lieut. The Duke of Dunstable (Officer of Dragoon Guards) (tenor)
- Reginald Bunthorne (a Fleshly Poet) (comic baritone)
- Archibald Grosvenor (an Idyllic Poet) (lyric baritone)
- Mr. Bunthorne's Solicitor (silent)
- The Lady Angela (Rapturous Maiden) (mezzo-soprano)
- The Lady Saphir (Rapturous Maiden) (mezzo-soprano or soprano)
- The Lady Ella (Rapturous Maiden) (soprano)
- The Lady Jane (Rapturous Maiden) (contralto)
- Patience (a Dairy Maid) (soprano)
- Chorus of Rapturous Maidens and Officers of Dragoon Guards

 Question: What are the names of the main characters in the opera in which Michael made his debut?


Output: Answer: - Colonel Calverley (Officer of Dragoon Guards) (bass-baritone)
- Major Murgatroyd (Officer of Dragoon Guards) (baritone)
- Lieut. The Duke of Dunstable (Officer of Dragoon Guards) (tenor)
- Reginald Bunthorne (a Fleshly Poet) (comic baritone)
- Archibald Grosvenor (an Idyllic Poet) (lyric baritone)
- Mr. Bunthorne's Solicitor (silent)
- The Lady Angela (Rapturous Maiden) (mezzo-soprano)
- The Lady Saphir (Rapturous Maiden) (mezzo-soprano or soprano)
- The Lady Ella (Rapturous Maiden) (soprano)
- The Lady Jane (Rapturous Maiden) (contralto)
- Patience (a Dairy Maid) (soprano)