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: Consider 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..


Output: 3


Input: Consider Input: Question: What were the factions in the 1975 civil war? Passage 1:The 84th Regiment of Foot (Royal Highland Emigrants) was a British regiment in the American Revolutionary War that was raised to defend present day Ontario, Quebec and Atlantic Canada from the constant land and sea attacks by American Revolutionaries. The 84th Regiment was also involved in offensive action in the Thirteen Colonies; including North Carolina, South Carolina, Georgia, Virginia and what is now Maine, as well as raids upon Lake Champlain and the Mohawk Valley. The regiment consisted of 2,000 men in twenty companies. The 84th Regiment was raised from Scottish soldiers who had served in the Seven Years' War and stayed in North America. As a result, the 84th Regiment had one of the oldest and most experienced officer corps of any regiment in North America. The Scottish Highland regiments were a key element of the British Army in the American Revolution. The 84th Regiment was clothed, armed and accoutred the same as the Black Watch, with Lieutenant Colonel Allan Maclean commanding the first battalion and Major General John Small of Strathardle commanding the second. The two Battalions operated independently of each other and saw little action together.
 Passage 2:By the mid-1970s, Arafat and his Fatah movement found themselves in a tenuous position. Arafat increasingly called for diplomacy, perhaps best symbolized by his Ten Point Program and his support for a UN Security Council resolution proposed in 1976 calling for a two-state settlement on the pre-1967 borders. But the Rejectionist Front denounced the calls for diplomacy, and a diplomatic solution was vetoed by the United States. In 1975, the increasing tensions between Palestinian militants and Christian militias exploded into the Lebanese Civil War, involving all factions. On 20 January 1976, the PLO took part in the Damour massacre in retaliation to the Karantina massacre. The PLO and Lebanese National Movement attacked the Christian town of Damour, killing 684 civilians and forcing the remainder of the town's population to flee. In 1976 Syria joined the war by invading Lebanon, beginning the 29‑year Syrian occupation of Lebanon, and in 1978 Israel invaded South Lebanon in response to the Coastal Road Massacre, executed by Palestinian militants based in Lebanon.
 Passage 3:Cartwright served as the president of the Philosophy of Science Association (2009–10), as vice-president (2007–8) and president (2008–9) of the Pacific Division of the American Philosophical Association, and was elected to be President of the Division for Logic, Methodology and Philosophy of Science and Technology from 2020 to 2023. She is Professor Emeritus at the London School of Economics. She is also Fellow of the British Academy, a member of the American Academy of Arts and Sciences, a member of the German Academy of Sciences Leopoldina, and a Fellow of the Academy of Social Sciences. She has received honorary degrees from Southern Methodist University and the University of St Andrews as well as a MacArthur Fellowship. 


Output: 2


Input: Consider Input: Question: How many years of total work did it take Abd al-Rahman al-Sufi (Azophi) to create his Book of Fixed Stars? Passage 1:In 1923, Calhern left the movies, deciding to devote his career entirely to the stage, but he would later return to the screen after the advent of sound pictures. In films, He was primarily cast as a character actor, while he continued to play leading roles on the stage. He reached his peak in the early 1950s as a Metro-Goldwyn-Mayer contract player. Among Calhern's many memorable screen portrayals were Ambassador Trentino in the Marx Brothers classic Duck Soup (1933) and three diverse roles that he appeared in at MGM in 1950: a singing role as Buffalo Bill in the film version of the musical Annie Get Your Gun, as a double-crossing lawyer and sugar-daddy to Marilyn Monroe in John Huston's film noir classic The Asphalt Jungle, and his Oscar-nominated performance as Oliver Wendell Holmes in The Magnificent Yankee (re-creating his role from the Broadway stage). He was also praised for his portrayal of the title role in the John Houseman production of Julius Caesar (adapted from the Shakespeare play) in 1953, directed by Joseph L. Mankiewicz. Calhern also played the role of the devious George Caswell, the manipulative board member of Tredway Corporation in the 1954 production of Executive Suite.
 Passage 2:In the 10th century, Abd al-Rahman al-Sufi (Azophi) carried out observations on the stars and described their positions, magnitudes, brightness, and colour and drawings for each constellation in his Book of Fixed Stars. He also gave the first descriptions and pictures of "A Little Cloud" now known as the Andromeda Galaxy. He mentions it as lying before the mouth of a Big Fish, an Arabic constellation. This "cloud" was apparently commonly known to the Isfahan astronomers, very probably before 905 AD. The first recorded mention of the Large Magellanic Cloud was also given by al-Sufi. In 1006, Ali ibn Ridwan observed SN 1006, the brightest supernova in recorded history, and left a detailed description of the temporary star.
 Passage 3:Born in Arlington County, Virginia, Purcell earned her bachelor's degree in painting from the Corcoran School of Art and George Washington University in 1973, after independent study in Mexico from 1969 to 1971. In 1995 she received a Master of Arts degree in Liberal Studies from New York University. She has been invited to many exhibitions, solo and group, both in the United States and abroad. An abstract expressionist, she received a Pollock-Krasner Foundation grant in 1989 and in 2018; a Lester Hereward Cooke foundation grant for mid-career achievement in painting in 1988 associated through The National Gallery of Art, Wash., D.C.; a fellowship at the MacDowell Colony in 1975; and grants from the New York Foundation for the Arts in 2013, the Joan Mitchell Foundation in 2014, and the Adolph and Esther Gottlieb Foundation in 2014. She has been a guest lecturer at Indiana State University, the Smithsonian American Art Museum, and Long Island University, and was on the faculty of the Corcoran School of Art and the Smithsonian Institution from 1974 to 1979; from 1983 to 1985 she taught at the Parsons School of Design. Museums which own examples of Purcell's work includejThe National Gallery of Art, the Phillips Collection, the Corcoran Museum of Art, the National Museum of Women in the Arts, the Santa Barbara Museum of Art, the New Orleans Museum of Art, the Virginia Museum of Fine Arts, and the Salt Lake City Museum, and it may be found in numerous private and corporate collections as well. She is currently represented by the prestigious Berry Campbell Gallery in New York City. Her works and more information can be viewed at www.annpurcellart.com.
Output: 2