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.

Example Input: Question: How much time were there between the end of the failed Market Garden operation and the beginning of the new allied offensive near the Belgian-Dutch border? Passage 1:The royal election of 1764 resulted in the elevation of Stanisław August Poniatowski, a refined and worldly aristocrat connected to a major magnate faction, but hand-picked and imposed by Empress Catherine II of Russia, who expected Poniatowski to be her obedient follower. The King accordingly spent his reign torn between his desire to implement reforms necessary to save the state, and his perceived necessity of remaining in subordinate relationship with his Russian sponsors. The Bar Confederation of 1768 was a szlachta rebellion directed against Russia and the Polish king, fought to preserve Poland's independence and in support of szlachta's traditional causes. It was brought under control and followed in 1772 by the First Partition of the Commonwealth, a permanent encroachment on the outer Commonwealth provinces by the Russian Empire, the Kingdom of Prussia and Habsburg Austria. The "Partition Sejm" under duress "ratified" the partition fait accompli. In 1773 the Sejm established the Commission of National Education, a pioneering in Europe government education authority.
 Passage 2:The 2017–18 Providence Friars men's basketball team represented Providence College in the 2017–18 NCAA Division I men's basketball season. The Friars, led by seventh-year head coach Ed Cooley, played their home games at the Dunkin' Donuts Center as members of the Big East Conference. They finished the season 21–14, 10–8 in Big East play to finish in a three-way tie for third place. As the No. 5 seed in the Big East Tournament, they defeated Creighton and No. 1-seeded Xavier in back-to-back overtime games to advance to the championship game. In a third straight overtime game, the Friars fell to Villanova in the championship game. They received an at-large bid to the NCAA Tournament as the No. 10 seed in the West region where they lost to Texas A&M in the First Round.
 Passage 3:Joining the Battle of Hürtgen Forest, the division moved into defensive positions in the vicinity of Wuustwezel, Belgium on 23 October 1944. The Timberwolves were then assigned to British Field Marshal Bernard Montgomery's Anglo-Canadian 21st Army Group under the British I Corps, along with the U.S. 7th Armored Division, in order to clear out the Scheldt Estuary and open the port of Antwerp. While the U.S. 7th Armored Division was assigned static duty holding the right flank of the gains made during the failed Market Garden operation, the 104th Infantry Division was to assist the First Canadian Army in the taking of the Scheldt. The Timberwolves travelled across France by train and debarked near the Belgian-Dutch border and waited for word to take part in a new allied offensive, Operation Pheasant, taking the place of the experienced British 49th Infantry Division on the left flank and the Polish 1st Armored Division on the right.

Example Output: 3

Example Input: Question: Which town was near the camp that, until May 1942, the Germans used it to mostly kill off Jews from Belgrade and other parts of Serbia? Passage 1:William Alfred Passavant was born in 1821 in Zelienople, Pennsylvania, the third and youngest son of Phillipe Louis Passavant and Fredericka Wilhelmina Basse (nicknamed "Zelie," hence the town's name). His grandfather, Baron Dettmar Basse, born in Iserlohn in the Ruhr Valley in what was then the Grand Duchy of Hesse and later became Germany, spent a decade in Paris as a diplomat and merchant before fleeing the Napoleonic Wars and emigrating to Philadelphia and then Pittsburgh in 1801. Drawn by the prospect of religious freedom and economic opportunity, the widower Baron bought 10,000 acres along Connoquenessing Creek in Butler County, Pennsylvania, began building a wood framed castle, and founded (with Christian Buhl) a new town complete with sawmill, brickyard, and an iron furnace. He also traveled and sent glowing letters back to Germany, persuading his daughter and her new husband (a French Huguenot who fled after repeal of the Edict of Nantes) to emigrate in 1807 from Frankfurt.
 Passage 2:The 1st King's Dragoon Guards was a cavalry regiment in the British Army. The regiment was raised by Sir John Lanier in 1685 as the 2nd Queen's Regiment of Horse, named in honour of Queen Mary, consort of King James II. It was renamed the 2nd King's Own Regiment of Horse in 1714 in honour of George I. The regiment attained the title 1st King's Dragoon Guards in 1751. The regiment served as horse cavalry until 1937 when it was mechanised with light tanks. The regiment became part of the Royal Armoured Corps in 1939. After service in the First World War and the Second World War, the regiment amalgamated with the 2nd Dragoon Guards (Queen's Bays) in 1959 to form the 1st The Queen's Dragoon Guards.
 Passage 3:After the April war of 1941 when Germany and its allies occupied and partitioned the Kingdom of Yugoslavia, entire Syrmia region (including the left bank of the Sava) became part of the Independent State of Croatia where they set the Ustaše regime. Nazi secret police, Gestapo, took over Sajmište. They encircled it with several rings of barbed wire turning it into what they referred to as "collection center" – a euphemism for a prison. It eventually became a concentration camp. Until May 1942 Germans used Sajmište concentration camp to mostly kill off Jews from Belgrade and other parts of Serbia. From April 1942 onwards, Serbian prisoners were transported in from Jasenovac and Stara Gradiška concentration camps run by ISC Croatian Ustaše. Partisans captured throughout Serbia were also sent to Sajmište. Detainees were also sent in from other parts of Yugoslavia, especially Serbs after major German offensives on briefly liberated territories. Executions of captured prisoners lasted as long as the camp existed. During their heavy “Easter bombing” of Belgrade, Allied aircraft bombed Sajmište on 17 April 1944, killing some 100 inmates and inflicting heavy damage on the camp itself, destroying all the buildings except for the Spasić pavilion and the Central tower..

Example Output: 3

Example Input: Question: What town was the US Supreme Court Justice that worked at the same firm Milton Shadur worked at starting in 1949 from? Passage 1:Shadur was born in Saint Paul, Minnesota, and raised in Milwaukee, Wisconsin, where he attended Washington High School, alma mater of fellow future attorneys Newton N. Minow and Abner J. Mikva. Shadur received a Bachelor of Science degree in Mathematics and Physics from the University of Chicago in 1943. Upon graduation, he joined the United States Navy, where he served as a radar officer on multiple ships, including the USS Sangamon, the victim of a kamikaze attack on May 24, 1945. After earning a Juris Doctor from the University of Chicago Law School in 1949, he joined the law firm of Goldberg, Devoe & Brussell, which had become known as Shadur, Krupp & Miller by the time of Shadur's appointment to the federal judiciary, and is today known as Miller, Shakman & Beem. In addition to Shadur, the firm produced a number of other highly-regarded jurists, including former United States Supreme Court Justice Arthur Goldberg; Mikva, who served on the United States Court of Appeals for the District of Columbia Circuit and as White House Counsel; and United States District Court Judge Elaine E. Bucklo.
 Passage 2:Apart from its engine configuration, the C.43 was conventional and shared its airframe with the three engined C.39. The first five engine aircraft built in France, it was a three bay biplane with fabric covered, rectangular plan wings mounted without stagger. The lower wing had dihedral outboard of the engines, reducing the large interwing gap from inboard to outboard. Though their spans were about equal (on the C.39, the upper span was and the lower one ) or 93% of the upper) the area of the lower wing was only 76% that of the upper because of a narrower chord. The wings were joined by vertical pairs of interplane struts, the forward members attached near the leading edges, and the centre section was supported by similar, shorter cabane struts from the upper fuselage. The inner bay was defined by two close pairs of interplane struts, which between them supported the push-pull pairs of Le Rhône 9C nine cylinder rotary engines about halfway between the wings. Each pair was mounted in a long, cylindrical cowling. Its ailerons, on the upper wing only, were aerodynamically balanced by overhanging extensions beyond the tips, as on the C.39.
 Passage 3:Karl Holl studied philosophy and theology at the Tübinger Stift. He became a member of the Studentenverbindung (student association) Normannia. While serving as a minister in Württemberg, he completed his doctorate and became the lead tutor (Repetent) at the Tübinger Stift in 1891. From 1894 he was active as a research assistant at the Prussian Academy of Sciences at the instigation of Adolf von Harnack. He completed his Habilitation in 1896 at the theological faculty of Berlin. In 1901 he became associate professor (Extraordinarius) of church history at the University of Tübingen, from 1906 he was Professor (Ordinarius) at the University of Berlin. On December 17, 1914 he was admitted as a full member of the Prussian Academy of Sciences. He also served from 1912 to 1926 as “Ephorus” of the Evangelical Theological Seminary, the Stiftung Johanneum, in Berlin. His grave is located at the church cemetery in Stahnsdorf.

Example Output:
1