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: Did the man who founded the strong LDP faction and the man whose hands it later fell into both serve as Prime Minister of Japan? Passage 1:In 1922, Heitler began his study of physics at the Karlsruhe Technische Hochschule, in 1923 at the Humboldt University of Berlin, and in 1924 at the Ludwig Maximilian University of Munich (LMU), where he studied under both Arnold Sommerfeld and Karl Herzfeld. The latter was his thesis advisor when he obtained his doctorate in 1926; Herzfeld taught courses in theoretical physics and one in physical chemistry, and in Sommerfeld's absence often took over his classes. From 1926 to 1927, he was a Rockefeller Foundation Fellow for postgraduate research with Niels Bohr at the Institute for Theoretical Physics at the University of Copenhagen and with Erwin Schrödinger at the University of Zurich. He then became an assistant to Max Born at the Institute for Theoretical Physics at the University of Göttingen. Heitler completed his Habilitation, under Born, in 1929, and then remained as a Privatdozent until 1933. In that year, he was let go by the university because he was Jewish.
 Passage 2:Hashimoto became a key figure in the strong LDP faction founded by Kakuei Tanaka in the 1970s, which later fell into the hands of Noboru Takeshita, who then was tainted by the Recruit scandal of 1988. In 1991, the press had discovered that one of Hashimoto's secretaries had been involved in an illegal financial dealing. Hashimoto retired as Minister of Finance from the Second Kaifu Cabinet. Following the collapse of the bubble economy, the LDP momentarily lost power in 1993/94 during the Hosokawa and Hata anti-LDP coalition cabinets negotiated by LDP defector Ichirō Ozawa. Hashimoto was brought back to the cabinet when the LDP under Yōhei Kōno returned to power in 1994 by entering a ruling coalition with traditional archrival Japanese Socialist Party (JSP), giving the prime ministership to the junior partner, and the minor New Party Harbinger (NPH). Hashimoto became Minister of International Trade and Industry in the Murayama Cabinet of Tomiichi Murayama. As the chief of MITI, Hashimoto made himself known at meetings of APEC and at summit conferences.
 Passage 3:Belgrade marshalling yard () or Makiš railway station (), or Makiš freight station, is a classification yard of the Belgrade railway junction and the largest railway station in Serbia. It is located in the neighbourhood of Makiš in Čukarica of Belgrade. The railroad continues to Ostružnica in one line via park A, in the other direction to Ostružnica via park B, in third direction to Resnik via junction B near Železnik and junction K of Belgrade railway junction near Petlovo Brdo, in fourth direction to Resnik via junction R in the tunnel below Vidikovac and junction A near Kneževac, in the fifth direction to Rakovica via park B and junction R, in the sixth direction to Rakovica via park A and junction T, in the seventh direction to Rakovica via park B and junction T per second line and the eight towards direction to Jajinci. Belgrade marshalling yard consists of 120 railway tracks.

Example Output: 2

Example Input: Question: How many different slavic tribes were there in the 6th century? Passage 1:Islamabad officially became the capital of Pakistan on 14 August 1967, exactly 20 years after the country's independence. The first capital of Pakistan was the coastal city of Karachi in Sindh, which was selected by Muhammad Ali Jinnah. Karachi was and still is the largest city and economic capital of Pakistan. It remained the seat of government until 1959, when the military president, Ayub Khan, decided to build a new capital, Islamabad in the north of Pakistan, near the general headquarters of the Pakistani Armed Forces which is in Rawalpindi. During this process, Rawalpindi was the interim capital. The name of Islamabad was influenced from the Mughal name of the Bengali port city of Chittagong which was Islamabad.
 Passage 2:Slavic tribes settled in the Balkan region including North Macedonia by the late 6th century AD. During the 580s, Byzantine literature attests to the Slavs raiding Byzantine territories in the region of Macedonia, later aided by Bulgars. Historical records document that in c. 680 a group of Bulgars, Slavs and Byzantines led by a Bulgar called Kuber settled in the region of the Keramisian plain, centred on the city of Bitola, forming a second route for the Bulgar definitive settlement on the Balkan Peninsula at the end of the 7th century. Presian's reign apparently coincides with the extension of Bulgarian control over the Slavic tribes in and around Macedonia. The Slavic tribes that settled in the region of Macedonia converted to Christianity around the 9th century during the reign of Tsar Boris I of Bulgaria. The Ohrid Literary School became one of the two major cultural centres of the First Bulgarian Empire, along with the Preslav Literary School. Established in Ohrid in 886 by Saint Clement of Ohrid on the order of Boris I, the Ohrid Literary School was involved in the spreading of the Cyrillic.
 Passage 3:Boudet was born on 16 November 1837 in the house of Mrs Zoé (Angélique-Zoé-Caroline née Saurel) Pinet-Laval (Boudet's neighbour), a widow in Quillan in the department of Aude and died on 30 March 1915 in Axat. He was the third of four children, the second of three sons, of Pierre-Auguste Boudet (died on 10 February 1841 and Jeanne-Adélaide-Elizabeth Huillet. Boudet's father was the manager of the forges of Quillan who had been authorized (1837) by François-Denis-Henry-Albert, Count de La Rochefoucauld-Bayers (1799–1854), a member of a prominent French aristocratic family, the De la Rochefoucault to act as his sole representative to constitute a joint venture, la societé des forges et fonderies d'Axat, a Forge and casting plant, the partnership was also composed of controlling shareholder, Ange-Jean-Michel-Bonaventure (1767–1847), 4th Marquess of Dax d'Axat, once Mayor of Montpellier and his son Barthélémy-Léon-François-Xavîer de Dax. Nothing is known about Boudet's early years following his father death and how his family managed to survive financially is not documented either; Gérard de Sède claimed – without citing any evidence – that Boudet entered holy orders through the patronage of Abbé Emile-Francois-Henri Géraud de Cayron (1807–1897). After completing his seminary studies in Carcassonne, where he also earned his degree in English language and literature, Boudet was ordained to the priesthood on Christmas Day 1861, he spent the first year of his priesthood in Durban-Corbières until 16 June 1862 when he was assigned to Caunes-Minervois up to 30 October 1866. On 1 November 1866, Boudet was appointed parish priest of Festes-et-Saint-André, next to the town of Limoux. In 1872, Boudet was transferred to Rennes-les-Bains (succeeding L'abbé Jean Vié who had died a short time earlier) until 1914 when he was discharged from his duty by the Bishop of Carcassonne, Mgr Paul-Félix Beuvain de Beauséjour (1839–1930), due to serious illness. Boudet lived in Rennes-les-Bains with his mother and sister Jeanne, both died the same year in 1896.

Example Output: 2

Example Input: Question: When did Wayne Rooney start playing professionally? Passage 1:Arsenal had finished the previous season as runners-up in the Premier League, overhauled by Manchester United in the final ten weeks of the season. The club did, however, retain the FA Cup, with a 1–0 win against Southampton. Such was Arsenal's effective start to the 2002–03 campaign, manager Arsène Wenger suggested his team could remain the whole season undefeated in all competitions:It's not impossible as A.C. Milan once did it but I can't see why it's so shocking to say it. Do you think Manchester United, Liverpool or Chelsea don't dream that as well? They're exactly the same. They just don't say it because they're scared to look ridiculous, but nobody is ridiculous in this job as we know anything can happen. The team lost to Everton a month after Wenger's proclamation; teenager Wayne Rooney scored the match winner, which ended a run of 30 league games without defeat. By February 2003, Arsenal moved five points clear of Manchester United at the top of the league table, but injuries to key players, not least captain Patrick Vieira, had destabilised the team. Draws in April, coupled with a defeat to Leeds United at home, mathematically ended Arsenal's chances of retaining the title. Wenger refuted opinions from the media that their season was a failure and said: 
 Passage 2:Philpott was a family doctor in Markham–Stouffville from 1998 to 2015. She served as Chief of the Department of Family Medicine at Markham Stouffville Hospital from 2008 to 2014. She is an Associate Professor in the University of Toronto’s Department of Family and Community Medicine. She was the Lead Physician of the Health For All Family Health Team in Markham, Ontario. She worked in Niger in West Africa from 1989-1998 with a faith-based non-governmental organization, where she practiced general medicine and developed a training program for village health workers. She returned to Niger in 2005 with Médecins sans Frontières during a food crisis. She was the Family Medicine lead in the Toronto Addis Ababa Academic Collaboration (TAAAC) from 2008 to 2014. In this capacity she helped colleagues at Addis Ababa University to develop the first training program for Family Medicine in Ethiopia that began in 2013. The first seven students in this programme graduated in early 2016. Philpott has been an advocate for Canada to give greater attention to the rights of refugees, particularly in respect of the health care afforded to them. In an article in the Toronto Star in 2014 she argued that "the Conservative government's cuts to refugee health care are 'cruel and unusual. Philpott is a co-curator of TEDxStouffville founded in 2012 with Dr. Eileen Nicolle. The TEDxStouffville committee, a collaboration between Health for All Family Health Team, Markham Stouffville Hospital, the University of Toronto and residents of the town of Whitchurch–Stouffville, develops its program with live speakers on the theme of Social Determinants of Health.
 Passage 3:Route 67 is mostly a two-lane surface road, with a divided four-lane section in Southbury. It begins in New Milford as a 0.5 mile concurrency with US 202 as the latter leaves a concurrency with US 7. After crossing the Housatonic River into the center of town, Route 67 breaks away to the southeast. In Bridgewater, it meets the northern end of Route 133. In Roxbury, it meets the southern end of Route 199 and the western end of Route 317. It then clips a corner of Woodbury before passing into New Haven County and the town of Southbury, where it passes the northern end of Route 172 before joining US 6 for a 4 lane divided 1.6 mile concurrency leading to a junction with I-84 at Exit 15. Here, US 6 joins I-84 West and Route 67 continues to the southeast becoming a 2-lane road once again. After intersecting Route 188, it enters Oxford, where it has a junction with the west end of Route 42. In Seymour, it passes the western end of Route 313 before crossing the Naugatuck River. On the east shore of the river, it meets the Route 8 expressway at Exits 21 & 22. It then passes the northern end of Route 115 before heading into Woodbridge, where Route 67 ends at Route 63. 

Example Output:
1