TASK DEFINITION: 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'.
PROBLEM: Passage: The Yardbirds are an English blues rock band from London. Formed in May 1963, the group originally included lead vocalist Keith Relf, lead guitarist Anthony "Top" Topham, rhythm guitarist Chris Dreja, bassist Paul Samwell-Smith and drummer Jim McCarty. In October, Topham was replaced by Eric Clapton. He remained until 13 March 1965, when he left due to creative disagreements. Clapton recommended Jimmy Page to replace him, but he declined and Jeff Beck took over. Page later joined on bass the following June, after Samwell-Smith abruptly quit; Dreja later took over the role, allowing Page to join Beck on guitar. This lineup was short-lived, however, as Beck left in November 1966. The group continued as a four-piece until July 1968, when Relf and McCarty left due to creative differences, primarily with Page. Dreja initially remained, but by August Page formed a new group with vocalist Robert Plant, bassist John Paul Jones and drummer John Bonham, who later renamed themselves Led Zeppelin.
 Link Information: who later renamed themselves Led Zeppelin. Question: In what year did the Yardbirds rename themselves Led Zeppelin?

SOLUTION: Answer: 1968

PROBLEM: Passage: Born in Constantinople to a civil servant father, Mehmet Cemil Bey, and a mother Ayşe Hamide Hanım, who was a daughter of Sufi shaykh İbrahim Edhem Efendi, he studied law at Darülfünûn-u Şahâne (دار الفنون شهانه), now Istanbul University, and graduated in 1908. He was a legal counsel for the Ottoman Ministry of Foreign Affairs, when he saw the birth of his first son, Nesuhi, on 26 November 1917, in Constantinople (now Istanbul), during the First World War. Taking part in an Ottoman delegation with a mission to search reconciliation with the Nationalists in Ankara, by the end of 1920, changed his destiny. While the two Ottoman Ministers heading the delegation returned to Istanbul after not achieving an understanding with the revolutionaries led by Mustafa Kemal Pasha he chose to join the National Struggle and remained in Ankara, leaving behind his young wife and three-year-old son, Nesuhi. He became an aide to Mustafa Kemal during the Turkish War of Independence and the chief legal counsel of the Turkish delegation to the resulting Treaty of Lausanne in 1923.
 Link Information: The Turkish revolutionaries rebelled against this partitioning and against the Treaty of Sèvres, signed in 1920 by the Ottoman government Question: What year did Pasha found the revolutionary movement that Ertegun later joined?

SOLUTION: Answer: 1920 

PROBLEM: Passage: Following a vote by the faculty, the pianist Ludovico Bramanti became the new Director of the conservatory in 2014, succeeding another pianist, Maurizio Tarsetti, who had held the post since 2008. In the academic year 2009/2010, the conservatory had an enrollment of approximately 850 students. Of those, 821 were Italian with the remainder from 26 other countries as far afield as Peru, Nepal and Kazakhstan. The conservatory offers bachelor and master diplomas in singing, instrumental performance, composition, musicology, choral conducting, jazz and electronic music. It also trains music teachers for secondary schools and holds regular master classes and seminars. Admission to the diploma courses is based on an entrance examination with five €1000 scholarships awarded annually by the Fondazione Rossini. conservatory has three specialised research laboratories: 20th Century and Contemporary Music; Early Music; and Electronic and Experimental Music (LEMS), which was established in 1971 by the Italian composer Aldo Clementi. There are several permanent ensembles in which both students and faculty participate, including the Symphony Orchestra, Wind Orchestra, Jazz Orchestra, Saxophone Ensemble, and Gregorian Choir. The ensembles and soloists perform a variety of public concerts in Pesaro and the surrounding region during the year, including those celebrating Christmas, Easter, Ferragosto, May Day, Festa della Repubblica, and Saint Cecilia's Day. The conservatory also co-produces Progetto Orfeo, an international university festival of opera and musical theatre, and runs two national music competitions, Harpsichord (established in 1991) and Bassoon (established in 2004).
 Link Information: 

Aldo Clementi (25 May 1925 – 3 March 2011) Question: How old was Aldo Clementi when Electronic and Experimental Music (LEMS) was established?

SOLUTION:
Answer: 47