Definition: In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Input: Question: How old was Emir Alim Khan when he fed to Dushanbe? Passage 1:Grosheide was elected as a Member of the House of Representatives after the election of 1971, taking office on 11 May 1971. Following the Grosheide was appointed as State Secretary for Justice in the Cabinet Biesheuvel I, taking office on 28 July 1971. The Cabinet Biesheuvel I fell just one year later on 19 July 1972 and continued to serve in a demissionary capacity until it was replaced by the caretaker Cabinet Biesheuvel II with Grosheide continuing as State Secretary for Justice, taking office on 9 August 1972. In August 1972 Grosheide announced that he would not stand for the election of 1972. The Cabinet Biesheuvel II was replaced by the Cabinet Den Uyl on 11 May 1973. Grosheide remained in active politics, in January 1974 he was nominated as Mayor of Rijswijk, serving from 1 February 1974 until his resignation on 1 July 1978. Grosheide also worked as the director of the Abraham Kuyper Foundation from 1 July 1974 until 1 August 1979. Grosheide worked as a civil servant for the Ministry of Justice from July 1978 until February 1993 and served as Director-General of the Custodial Institutions Agency from July 1978 until January 1991. Grosheide was appointed as Special Coordinator for European Immigration an Asylum and Deputy Secretary-General of the Ministry of Justice on 1 January 1991. In January 1993 Grosheide was nominated as Extraordinary Member of the Council of State, he resigned as a Special Coordinator the day he was installed as a Member of the Council of State, serving from 1 February 1993 until 1 September 2000.
 Passage 2:The cut, is crossed by Ham Bridge from the rest of Old Windsor to Ham Island. Much smaller Lion Island is at the top where the flows split. Then Albert Bridge crosses to Datchet including at its lowest point, the thin island of Sumptermead Ait. On the Windsor side (right bank), the river winds round farmland at Princes Consort farm and Windsor Castle Home Park. There follows Victoria Bridge connecting the upper end of Datchet then a golf course, followed by Black Potts Railway Bridge. The railway bridge has a great brick pier in Black Potts Ait, behind which the Jubilee River rejoins the Thames. The left bank becomes playing fields of Eton College. The area known as Black Potts up to Romney Island is an attraction where those fishing have included Isaak Walton who wrote a major work which promoted angling and Charles II in the century before.
 Passage 3:Bukhara was the last capital of the Emirate of Bukhara and was besieged by the Red Army during the Russian Civil War. During the Bukhara operation of 1920, an army of well-disciplined and well equipped Red Army troops under the command of Bolshevik general Mikhail Frunze attacked the city of Bukhara. On 31 August 1920, the Emir Alim Khan fled to Dushanbe in Eastern Bukhara (later he escaped from Dushanbe to Kabul in Afghanistan). On 2 September 1920, after four days of fighting, the emir's citadel (the Ark) was destroyed, the red flag was raised from the top of Kalyan Minaret. On 14 September 1920, the All-Bukharan Revolutionary Committee was set up, headed by A. Mukhitdinov. The government—the Council of People's Nazirs (see nāẓir)—was presided over by Faizullah Khojaev.

Output:
3