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.

[EX Q]: 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.

[EX A]: 2

[EX Q]: Question: How old was Alexander's wife when they got married? Passage 1:The Irish government under outgoing Taoiseach Enda Kenny expressed concerns that a parliamentary deal between a British government and the DUP could put the Northern Ireland peace process at risk, a view also expressed by Sinn Féin politicians Gerry Adams and Gerry Kelly, Labour MP Yvette Cooper and former Downing Street Director of Communications Alastair Campbell. This opinion was, however, rejected by the Conservative leadership and former Secretary of State for Northern Ireland, Theresa Villiers, as well as by former Labour minister Caroline Flint who suggested that Gordon Brown may have sought an agreement with the DUP in 2010. The Conservative peer and former UUP First Minister of Northern Ireland, David Trimble, described claims that an agreement would put the peace process at risk as "scaremongering". On 13 June former Conservative Prime Minister John Major publicly urged May to govern without DUP support and not pursue a deal, on the grounds that an agreement could "damage" the "fragile" Northern Ireland peace process, suggesting the government must remain 'impartial'. Major himself had an agreement with the Unionist MPs of the UUP when in power and during peace negotiations in Northern Ireland, though not with the more hardline and socially-conservative DUP. On 15 June Sinn Féin's Gerry Adams met with Theresa May, telling her that he thought she was in breach of the Good Friday Agreement. This has been disputed by one of the UUP's negotiators for the Belfast Agreement.
 Passage 2:He testified as an expert witness about Russian interference in the 2016 United States elections, in a March 30, 2017 hearing before the United States Senate Select Committee on Intelligence. His testimony before the Senate Intelligence Committee was well received, and made multiple headlines. Slate referred to him in a headline as: "Clint Watts, Testifier Extraordinaire", and "The star of March’s Senate Intelligence Committee hearing". CNN profiled him after the testimony in a piece "Russia investigation: Who is Clint Watts", where it was noted he gained knowledge in the field of Russian cyber hacking methods, after himself being a target in 2015 following his "Trolling for Trump" article; the FBI notified the Foreign Policy Research Institute of the attack. Salon compared his testimony "follow the trail of dead Russians" to John Dean's statement about "a cancer on the presidency". This phrase in testimony by Watts was highlighted by the media, including CBS News, The American Interest, and The Oregonian. U.S. Senator Ron Wyden found the comment important to his investigation. Mark Shields of PBS NewsHour found his testimony "compelling", and CNN called it "blistering". Jennifer Rubin wrote for The Washington Post that his testimony "laid out the most comprehensive look at the array of tools Russia used to influence our election". After his testimony, he appeared on NBC's Meet the Press and explained ways the U.S. can better respond to cyberwarfare.
 Passage 3:Ancient historians, as well as modern ones, have also written on Alexander's marriage to Roxana the beautiful [Persian]n woman. Robin Lane Fox writes, "Roxana was said by contemporaries to be the most beautiful lady in all Asia. She deserved her name of Roshanak, meaning 'little star', (probably rokhshana or roshana which means light and illuminating) in Persian. Marriage to a local noble's family made sound political sense, but contemporaries implied that Alexander, aged 28, also lost his heart. A wedding-feast for the two of them was arranged high on one of the Persian rocks. Alexander and his bride shared a loaf of bread, a custom still observed in Turkestan. Characteristically, Alexander sliced it with his sword. Ulrich Wilcken writes, "The fairest prize that fell to him was Roxana, the daughter of Oxyartes, in the first bloom of youth, and in the judgment of Alexander's companions, next to Stateira the wife of Darius, the most beautiful woman that they had seen in Asia. Alexander fell passionately in love with her and determined to raise her to the position of his consort."

[EX A]: 3

[EX Q]: Question: How many plans are currently being held at RAF Mildenhall? Passage 1:Once the S-curve is established, the committee must place the teams throughout the four regions. They were originally referred to as East, Mideast, Midwest, and West. In 1985, the Mideast designation became the Southeast, and later the South Regional in 1998. The women's tournament continued to use the Mideast terminology through 2004. In 2004, the NCAA started to identify the men's regions only by the city in which the regional semifinals and finals were played, with the same change being made for the women's tournament in 2005. The NCAA reverted to the East/South/Midwest/West designations for the men's tournament starting in 2007, but continues to designate women's regionals by their cities. Typically the cities selected will be spread throughout the country and conform roughly to the old geographic distinctions. While the regions are named for certain cities, the first and second round games are played in different cities which need not be anywhere near the regional finals. In 2005 the Austin, Texas men's regional was fed by games in Indianapolis, Indiana; Tucson, Arizona; Charlotte, North Carolina; and Worcester, Massachusetts. This is due to the "pod" system enacted before the 2002 tournament to minimize travel for as many teams as possible, especially in the early rounds. Any team may be sent to any region and any pod, although the tournament does try to keep teams, especially the top-seeded teams, closer to home. However, in 2004, Pittsburgh played its first two tournament games in Milwaukee and not in Buffalo or Columbus, cities to which it was closer. This was done to keep a lower-seeded team, the Wisconsin Badgers, close to its campus. Similarly, two east-coast teams, Maryland and Syracuse, traveled to Denver, where their opening round opponents were BYU and UTEP, both of which were geographically closer to Denver. In addition, in 2009, Kansas and West Virginia, the two higher seeds, traveled to Minneapolis to play their opponents North Dakota State and Dayton, although Dayton and North Dakota State are geographically closer to Minneapolis than Kansas and West Virginia. To make matters worse for both latter teams, Kansas City (Kansas) and Greensboro NC (West Virginia) were both 1st-2nd round sites that year.
 Passage 2:West Suffield Mountain, like much of the Metacomet Ridge, is composed of basalt, also called traprock, a volcanic rock. The mountain formed near the end of the Triassic Period with the rifting apart of the North American continent from Africa and Eurasia. Lava welled up from the rift and solidified into sheets of strata hundreds of feet thick. Subsequent faulting and earthquake activity tilted the strata, creating the cliffs and ridgeline of West Suffield Mountain. Hot, dry upper slopes, cool, moist ravines, and mineral-rich ledges of basalt talus produce a combination of microclimate ecosystems on the mountain that support plant and animal species uncommon in greater Connecticut. West Suffield Mountain is also an important raptor migration path. (See Metacomet Ridge for more information on the geology and ecosystem of West Suffield Mountain).
 Passage 3:The Strategic Air Command (SAC) initially operated DC-130s assigned to its 100th Strategic Reconnaissance Wing (100 SRW) at Davis–Monthan AFB, Arizona from 1966 through 1976. In 1976, the 100th's DC-130s and drone assets were transferred to the 432nd Tactical Drone Group of Tactical Air Command (TAC) at Davis–Monthan AFB. Concurrent with this action, the 100 SRW's U-2 aircraft assets were transferred to the 9th Strategic Reconnaissance Wing (9 SRW) and merged with the latter's SR-71 aircraft assets at Beale AFB, California. The 100 SRW was then re-designated as the 100th Air Refueling Wing (100 ARW) and relocated to Beale AFB, operating KC-135 Stratotanker aircraft, until its later reassignment to its current home of RAF Mildenhall, United Kingdom.

[EX A]:
3