In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Ex Input:
Passage: George Frederic Watts was born in 1817, the son of a London musical instrument manufacturer. His two brothers died in 1823, and his mother in 1826, giving Watts an obsession with death throughout his life. Watts was apprenticed as a sculptor at the age of 10, and by his mid-teens was proficient enough as an artist to be earning a living as a portrait painter. At the age of 18 he gained admission to the Royal Academy schools, although he disliked their methods and his attendance was intermittent. From 1837, Watts was successful enough to devote himself full-time to painting.In 1843 Watts travelled to Italy where he remained for four years. On his return to London he suffered from melancholia, and painted many notably gloomy works. His skills were widely celebrated, and in 1856 he decided to devote himself to portrait painting. His portraits were extremely highly regarded, and in 1867 he was elected to the Royal Academy, at the time the highest honour available to an artist, although he rapidly became disillusioned with its culture. From 1870 onwards he became widely renowned as a painter of allegorical and mythical subjects; by this time, he was one of the most highly regarded artists in the world. In 1881 he added a glass-roofed gallery to his home at Little Holland House, which was open to the public at weekends, further increasing his fame. 
Question: What is the last name of the person gained admission to the Royal Academy schools at age 18?

Ex Output:
Watts.


Ex Input:
Passage: Boult, Adrian (1973). My Own Trumpet. London: Hamish Hamilton. ISBN 0-241-02445-5.
Boult, Adrian (1979). Music and Friends. London: Hamish Hamilton. ISBN 0-241-10178-6.
Dickinson, Alan Edgar Frederic (1995).  Alan Gibbs (ed.). Holst's Music—A Guide. London: Thames. ISBN 0-905210-45-X.
Dickinson, A E F (1957). "Gustav Holst".  In Alfred Louis Bacharach (ed) (ed.). The Music Masters IV: The Twentieth Century. Harmondsworth: Penguin. OCLC 26234192.CS1 maint: Extra text: editors list (link)
Gibbs, Alan (2000). Holst Among Friends. London: Thames Publishing. ISBN 978-0-905210-59-9.
Holmes, Paul (1998). Holst. Illustrated Lives of the Great Composers. London: Omnibus Press. OCLC 650194212.
Holst, Gustav (1974). Letters to W. G. Whittaker. University of Glasgow Press. ISBN 0-85261-106-4.
Holst, Imogen (1969). Gustav Holst (second ed.). London and New York: Oxford University Press. ISBN 0-19-315417-X.
Holst, Imogen (1974). A Thematic Catalogue of Gustav Holst's Music. London: Faber and Faber. ISBN 0-571-10004-X.
Holst, Imogen (1980). "Holst, Gustavus Theodore von".  In Stanley Sadie (ed) (ed.). The New Grove Dictionary of Music and Musicians. 8. London: Macmillan. ISBN 0-333-23111-2.CS1 maint: Extra text: editors list (link)
Holst, Imogen (1981). The Great Composers: Holst (second ed.). London: Faber and Faber. ISBN 0-571-09967-X.
Holst, Imogen (1986). The Music of Gustav Holst (third ed.). Oxford: Oxford University Press. ISBN 0-19-315458-7.
Hughes, Gervase (1960). The Music of Arthur Sullivan. London: Macmillan. OCLC 16739230.
Hughes, Gervase; Herbert Van Thal (1971). The Music Lover's Companion. London: Eyre and Spottiswoode. ISBN 0-413-27920-0.
Kennedy, Michael (1970). Elgar: Orchestral Music. London: BBC. OCLC 252020259.
March, Ivan (ed) (2007). The Penguin Guide to Recorded Classical Music, 2008. London: Penguin. ISBN 0-14-103336-3.CS1 maint: Extra text: authors list (link)
Mitchell, Jon C (2001). A Comprehensive Biography of Composer Gustav Holst, with Correspondence and Diary Excerpts. Lewiston, N Y: E Mellen Press. ISBN 0-7734-7522-2.
Moore, Jerrold Northrop (1992). Vaughan Williams—A Life in Photographs. Oxford: Oxford University Press. ISBN 0-19-816296-0.
Rodmell, Paul (2002). Charles Villiers Stanford. Aldershot: Scolar Press. ISBN 1-85928-198-2.
Rubbra, Edmund; Stephen Lloyd, eds. (1974). Gustav Holst. London: Triad Press. ISBN 0-902070-12-6.
Sackville-West, Edward; Desmond Shawe-Taylor (1955). The Record Guide. London: Collins. OCLC 500373060.
Short, Michael (1990). Gustav Holst: The Man and his Music. Oxford: Oxford University Press. ISBN 0-19-314154-X.
Tippett, Michael (1991). Those Twentieth Century Blues. London: Pimlico. ISBN 0-7126-6059-3.
Vaughan Williams, Ralph (2008).  Hugh Cobbe (ed.). Letters of Ralph Vaughan Williams. Oxford and New York: Oxford University Press. ISBN 0-19-925797-3. 
Question: What is the full name of the book written in 2008 that had the ISBN number of 0-19-925797-3?

Ex Output:
Letters of Ralph Vaughan Williams.


Ex Input:
Passage: The film opens with a trio of explorers in Africa who are hiding in a cave. One of the explorers, a pregnant woman, is bitten by a vampire bat.
The film then cuts forward in time to a small European village where a series of mysterious murders are taking place. The villagers readily assemble in mob form, with torches, at the house of Professor Kristan after every murder. The villagers suspect that a giant bat is to blame for the murders. Kristan gives the villagers advice on staying safe, and assures them a scientific explanation exists.
However, in subsequent scenes, Kristan himself is revealed to be the murderer. He is seized by attacks (triggered by darkness) which transform him into a trance-like state of murderousness. After he commits a murder, he awakens from the trance with no memory of the deed, believing himself merely to have fainted.  Kristan's obliviousness is further enabled by the intervention of his loyal hunchback Zan, the only person aware of Kristan's condition. Zan follows Kristan when he is in his trances, ensuring the professor is not discovered.
An old friend of Kristan's, Dr. Bizet, arrives to visit, and soon suspects what is happening. Bizet discloses to Kristan that his mother was bitten by a vampire bat, and that traits of vampirism have likely been passed down to him per Lamarckism. (The audience now understands the pregnant explorer in the opening flashback to have been Kristan's mother.)
After Kristan's fiance is attacked by an entranced Kristan, the mob of villagers assumes Zan is culpable and chases him to the edge of a cliff inside a cave. Kristan arrives and confesses to the murders, despite Zan's protestations (aimed at saving the professor) that he, the hunchback, is in fact the murderer.  As the mob watches, Kristan throws himself over the edge of the cliff and Zan follows. 
Question: Who is assumed to have attacked the professor's fiance?

Ex Output:

Zan.