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'.

Example Input: Passage: The word Punjabi (sometimes spelled Panjabi) has been derived from the word Panj-āb, Persian for "Five Waters", referring to the five major eastern tributaries of the Indus River. The name of the region was introduced by the Turko-Persian conquerors of South Asia and was a translation of the Sanskrit name for the region, Panchanada, which means "Land of the Five Rivers". Panj is cognate with Sanskrit () and Greek (pénte) and Lithuanian Penki - "five", and "āb" is cognate with Sanskrit (áp) and with the of . The historical Punjab region, now divided between India and Pakistan, is defined physiographically by the Indus River and these five tributaries. One of the five, the Beas River, is a tributary of another, the Sutlej.
 Link Information: The word Punjab means "land of five rivers" and the five rivers are Jhelum, Chenab, Ravi, Beas and Sutlej, Question: What are the names of the five major eastern tributaries of the Indus River?
Example Output: Answer: Jhelum, Chenab, Ravi, Beas and Sutlej,

Example Input: 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?
Example Output: Answer: 1920 

Example Input: Passage: Inside the SAPD, the first part of 1937 saw an intensification of differences over attitudes to a possible political party of the united left or a Popular front, and more precisely over the party's approach to the Soviet Union. The differences led to Peter Blachstein's exclusion from the SAPD. Others excluded at the same time included his political mentor and Erwin Ackerknecht: the three became the focus of a short-lived political grouping known as "Neuer Weg" ("New Way"). Blachstein was also affected more directly by the intense political tensions radiating out from Moscow, based on Stalin's suspicions - not entirely unfounded - that there might be comrades in the Soviet Union and further west in Europe who favoured an alternative Soviet leader. The POUM, of which Blachstein was a member, backed a broadly Trotskyite vision for a communist future and its members therefore became targets for Soviet agents. In June 1937 Blachstein was arrested in Barcelona by communist secret police and accused of spying for Franco and working for the Gestapo. With approximately 100 other foreign detainees he was taken to a large garage which had been adapted for use as an ad hoc prison. Because of the appalling hygiene he soon fell ill with Tuberculosis, as a result of which he was transferred to a sanatorium controlled by anarchist comrades. Helped by Spanish friends, in January 1938 he succeeded in escaping back to France.
 Link Information: Lenin died in January 1924. Stalin took charge Question: How long had Stalin been the leader of the Soviet Union by the year 1937?
Example Output:
Answer: 13