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 many years did the war last? Passage 1:Ladislaus Hunyadi was the elder of the two sons of John Hunyadi, voivode of Transylvania and later regent of the Kingdom of Hungary, and Elizabeth Szilágyi. He was the older brother of Matthias Hunyadi, who would later become the king of Hungary. At a very early age he accompanied his father in his campaigns. After the Battle of Kosovo (1448) he was left for a time, as a hostage for his father, in the hands of George Brankovic (1427–1456), despot of Serbia. In 1452 he was a member of the deputation which went to Vienna to receive back the Hungarian king Ladislaus V. In 1453 he was already ban of Croatia and Dalmatia. At the diet of Buda (1455) he resigned all his dignities, because of the accusations of Ulrich II, Count of Celje, and other enemies of his house, but a reconciliation was ultimately patched together and he was betrothed to Maria, the daughter of the palatine, Ladislaus Garai.
 Passage 2:The war ended in May 1945. A couple of weeks earlier had been one of thousands drowned off the coast at Lübeck when a liner/prison ship on which he was being held was sunk by the British. The central part of what remained of Germany (apart from the western part of Berlin) now found itself designated the Soviet occupation zone: political administration and reconstruction would take place under Soviet military administration. Charlotte Bischoff obtained a secretarial position with the Soviet occupation forces in May 1945. She then worked at a succession of jobs with the Free German Trade Union Federation (Freier Deutscher Gewerkschaftsbund, FDGB). The entire Soviet zone would be reformed as the German Democratic Republic, formally founded only in October 1949, but already in April 1946 the contentious merger between the old Communist Party and the Moderate-left SPD created the precondition for a return to one-party rule. Bischoff was one of thousands of former Communists who now lost no time in signing their membership over to the new Socialist Unity Party (SED /) '). Following internal disagreements in the FDGB, in May 1947 Bischoff switched her focus to "Social Help: Greater Berlin" ('), a city-wide welfare organisation with close links to East Germany's SED (party), staying with that organisation till September 1950, after which she went back to working with the FDGB. In 1957 she started work, on a free-lance basis, with the Marxism–Leninism Institute of the powerful Party Central Committee. Here she was involved in compiling the official "History of the German Workers' Movement" (). When the volume later appeared she was frequently identified in it but only as the "representative of the Central Committee". Her own contribution to the volume and the collected supporting documents remained unacknowledged during the GDR years. The writer Eva-Maria Siegel thinks this was probably because she included various corrections to the official historical ideology, notably in respect of the contribution of .
 Passage 3:Major Long's 1823 expedition up the Minnesota River (then known as St. Peter's River), to the headwaters of the Red River of the North, down that river to Pembina and Fort Garry, and thence by canoe across British Canada to Lake Huron is sometimes confused with his initial expedition to the Red River in modern-day Texas and Oklahoma. The expedition to the Red River of the North was a separate, later appointment which completed a series of explorations conceived of by Lewis Cass and implemented by David B. Douglass, Henry Schoolcraft, and others besides Major Long. The 1823 expedition was denoted primarily as a scientific reconnaissance and an evaluation of trade possibilities, but probably had undisclosed military objectives as well, and certainly was viewed with suspicion by British authorities in Canada. This expedition for a time was joined by the Italian adventurer Giacomo Beltrami, who argued with Long and left the expedition near Fort Garry. The 1823 expedition encouraged American traders to push into the fur trade in Northern Minnesota and Dakota, and fostered the development of the Red River Trails and a colorful chapter of ox cart trade between the Red River Colony and Fort Garry via Pembina and the newly developing towns of Mendota and St. Paul.

Output:
2