You will be given a definition of a task first, then some input of the task.
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.

Question: How many members strong was the Prague Philharmonia when Walker conducted it in 2005? Passage 1:The virus was discovered in 2014 by Olga Kosoy, Amy Lambert and colleagues from the Centers for Disease Control and Prevention (CDC) in Fort Collins, Colorado, in a sample of blood from the case patient. Tests had previously ruled out a wide range of tick-borne diseases including anaplasmosis, babesiosis, ehrlichiosis, Q fever, Rocky Mountain spotted fever and tularemia. During tests for Heartland virus, a recently discovered Phlebovirus known to be transmitted by ticks, prominent plaques, or areas where the cells were affected by virus infection, were observed on one-cell-thick cultures of African green monkey kidney cells. The plaques did not resemble the effects of Heartland virus, and the researchers hypothesized that they were the work of another virus. Recently developed "next-generation" sequencing techniques were employed to find novel viral RNA sequences in cell culture supernatants, similar to viruses of the genus Thogotovirus, family Orthomyxoviridae. Lambert, who worked on the sequencing, explained that these "state-of-the-art" techniques could be used to identify pathogens that older technologies could not detect.
 Passage 2:The People's Party (PP) is a conservative centre-right party that took its current name in 1989, replacing the previous People's Alliance, a more conservative party founded in 1976 by seven former Franco's ministers. In its refoundation it incorporated the Liberal Party and the majority of the Christian democrats. In 2005 it integrated the Democratic and Social Center Party. It governed Spain under the prime ministership of José María Aznar from 1996 to 2004, and again from December 2011, and after much uncertainty caused by the inconclusive results of the 2015 general election and the 2016 election when the People's Party formed a minority government with confidence and supply support from conservative Ciudadanos (Cs) and the Canarian Coalition (CC), which passed due to the Spanish Socialist Workers' Party (PSOE) abstaining. A motion of no confidence in the Spanish government of Mariano Rajoy was held between 31 May and 1 June 2018, registered by the Spanish Socialist Workers' Party (PSOE) after the People's Party(PP) was found to have profited from the illegal kickbacks-for-contracts scheme of the Gürtel case. The motion was successful and resulted in the PSOE leader Pedro Sánchez becoming the new Prime Minister of Spain until his 2019 state budget was rejected requiring him to call a snap election for April 28 of the same year.
 Passage 3:In 2000/01 Walker conducted the English Touring Opera's production of the Magic Flute, and on 27 November 2004 the Chelsea Opera Group (UK) in Glinka's A Life for the Tsar at the Queen Elizabeth Hall. In November 2005 he conducted the Prague Philharmonia, and in the winter season 2005/6 Walker conducted three performances of The Nutcracker for the Royal Opera House, Covent Garden, and Swan Lake in 2009 for the Finnish National Ballet. On 4 July 2010 he conducted the BBC Philharmonic Orchestra, and in 2011 a concert with the Royal Philharmonic Orchestra. He appeared at the Oundle International Festival in 2011 where he conducted the premiere of Prophet and Loss by Julian Grant. In October 2011 he conducted a Gershwin Gala with the Russian Philharmonic. In 2012 Walker conducted the English Chamber Orchestra. and a production of the Nutcracker at the Norwegian National Opera and Ballet. On 19 April 2015 he conducted the New Russia State Symphony Orchestra. In 2017 he was awarded the Elgar Medal by the Elgar Society for championing the composer's music internationally in countries including Belarus, Russia, Poland, Turkey and Romania.

Output:
3