Instructions: 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: Who designed the type of bomber that became Hannig first aerial victory? Passage 1:Radner pursued German studies for one semester, but left because she disliked it. She started training in an import–export business and had the best grades at the vocational school, but felt that it did not suit her. She applied to the Robert Schumann Hochschule for music in Düsseldorf and was one of seven selected from 200 applicants. Her voice teacher, Michaela Krämer, considered her to be a mezzo-soprano. Radner's father obtained additional voice lessons for her with Jeannette Zarou in Düsseldorf, and later with mezzo-soprano Marga Schiml, both of whom are experts in early music and Lieder. They recognized that she was really a contralto. Radner's mother died in 2003 after a long illness. Almost a year later, Radner earned her diploma. In the 2006 Bundeswettbewerb Gesang Berlin, she won the €3,000 third prize in the concert category and a scholarship from the Richard Wagner Society in Bayreuth to attend the 2007 Bayreuth Festival. In the concert division of the 2007 Cantilena Singing Competition, she placed second out of 120 vocalists from 19 countries. In 2008 she played Cornelia in Handel's Giulio Cesare in Egitto at the Theater Hagen. It was to be her only engagement as an ensemble member at a theatre. She decided that it was "not her world", not because it was no fun, but because she wanted to earn more, and she went independent. Radner was still a student in 2008 when she made her first public appearance under Zubin Mehta at the Palau de les Arts Reina Sofia in Valencia, singing Martin y Soler's oratorio Philitaei a Jonatha disperse. She gave a recital in June 2008.
 Passage 2:Born in 1921 in Frankenstein, Lower Silesia, Hannig joined the military service in the Luftwaffe as a Fahnenjunker (officer cadet) in October 1939. He was posted to the 6./Jagdgeschwader 54 "Grünherz" (JG 54—54th fighter wing) in early 1941. His brother, Walter Hannig, received the German Cross in Gold () on 28 April 1943 as an observer with Aufklärungsgruppe (reconnaissance group) 4.(F)/14 of the Luftwaffe. Horst Hannig claimed his first aerial victory, a Tupolev SB-2, on the first day of Operation Barbarossa, the German invasion of the Soviet Union on 22 June 1941. He achieved his first 30 victories up to November 1941. On 9 May 1942, Leutnant (second Lieutenant) Hannig was awarded the Knight's Cross of the Iron Cross () having flown over 200 operations and claiming 48 victories. He and Leutnant Hans Beißwenger received the Knight's Cross from General der Flieger Helmuth Förster at Siverskaya. On 21 July 1942 he claimed his 54th victory, a Petlyakov Pe-2 reconnaissance aircraft, near Lake Ilmen. It was JG 54 2,500th aerial victory.
 Passage 3:The 1991 Polish parliamentary election was held on 27 October 1991 to elect deputies to both houses of the National Assembly. The 1991 election was notable on several counts. It was the first parliamentary election to be held since the formation of the Third Republic, the first entirely free and competitive legislative election since the fall of communism, the first completely free legislative election of any sort since 1928, and only the fifth completely free election in all of Polish history. Due to the collapse of the Solidarity movement's political wing, the 1991 election saw deep political fragmentation, with a multitude of new parties and alliances emerging in its wake. Low voting thresholds within individual constituencies, along with a five percent national threshold allocated to a small portion of the Sejm, additionally contributed to party fragmentation. As a result, 29 political parties gained entry into the Sejm and 22 in the Senate, with no party holding a decisive majority. Two months of intense coalition negotiations followed, with Jan Olszewski of the Centre Agreement forming a minority government along with the Christian National Union, remnants of the broader Center Civic Alliance, and the Peasants' Agreement, with conditional support from Polish People's Party, Solidarity and other minor parties.

Output:
2