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 long had the London Stock Exchange been in existence for by the year Hamilton quit his membership there? Passage 1:Hamilton followed his mother as a Christian Scientist, and attended Claremont Fan Court School and then Eton College. He did National Service in the Coldstream Guards from 1955 to 1958. His father had been wounded while serving with the same regiment in the Second World War. Hamilton then worked in the City of London as a gilts broker. He was a member of the London Stock Exchange from 1967 to 1980. He remained in the City for only a short period, leaving when he inherited two estates from his father's cousin. He married his wife, Corinna Dixon, in 1967, and they had four sons together. He succeeded his father as Baron Hamilton of Dalzell in 1990, inheriting land near and properties in the village of Betchworth in Surrey, and a Regency mansion.
 Passage 2:As a backbencher in Ralph Klein's Progressive Conservative caucus, Knight moved a number of government bills. The first was 2003's Electric Utilities Act, which made some changes to the government's deregulation of the province's electricity market. Much of the debate around the bill was about whether the government's deregulation had worked well to date. The bill was passed on a party line vote, with Knight's fellow Progressive Conservatives voting unanimously in favour and the opposition Liberals and New Democrats voting unanimously against. Knight also sponsored the Securities Amendment Acts, separate bills with the same name from different years, 2005 and 2006. The first of these was designed to harmonize the securities regulation with that of other provinces. It was supported by Liberals Rick Miller and Bill Bonko, who considered it a step in the right direction. New Democrats gave it a mixed reception, with Ray Martin agreeing that it did make some improvements, but with his colleague David Eggen trying to kill it on third reading, saying that what was needed was a supra-provincial securities regulator. The 2006 edition of the Securities Amendment Act implemented further harmonization, and passed with little debate. The Securities Transfer Act of the same year consolidated and harmonized the province's rules for transferring securities, and passed with all-party support.
 Passage 3:On January 13, UFC revealed this event was originally intended to take place at Arena da Baixada (a much larger venue) in Curitiba, Brazil, and feature a UFC Heavyweight Championship rematch between champion Fabrício Werdum and former two-time champion Cain Velasquez, with former UFC Middleweight Champion Anderson Silva in the co-main event slot, possibly against Michael Bisping. Due to a series of injuries, the company moved the heavyweight bout to a separate event scheduled for February 6, which at that time was . This change made the March 5 event a smaller draw, which led to the transition to the smaller venue in Rio de Janeiro. To maintain local interest, the company then considered booking the main event as a rematch between two Brazilian fighters, Silva and former UFC Light Heavyweight Champion Vitor Belfort. Belfort declined the bout, as he wished to wait for the result of the middleweight title fight at UFC 194. This final fall-through is what prompted the cancellation of the event in Brazil and relocation to Las Vegas. On January 27, it was revealed the Werdum-Velasquez bout (which had been moved to "UFC 196" scheduled for February 6, 2016) was cancelled entirely. This forced that event to alter into a "UFC Fight Night" card, and the originally scheduled "UFC 197" event was renamed UFC 196.

Example Output: 1

Example Input: Question: How long had Super Junior been an idol group when they had their six-car accident in Singapore? Passage 1:The Red Line MetroLink alignment begins at Lambert St. Louis International Airport, making stops at the main and east terminal stations. It then proceeds through Kinloch before making a stop in North Hanley near Bel-Ridge. It makes 2 stops (UMSL North & South stations) at the University of Missouri St. Louis located in Normandy. After departing UMSL-North Station, the trains divert south onto the former Wabash/Norfolk & Western Railroad's Union Depot (U.D.) line that once brought passenger trains from Ferguson to Union Station. It further follows into 2 stops in Pagedale on St. Charles Rock Road and Wellston on Plymouth St., before crossing the St. Louis City/County boundary line at Skinker Boulevard; and making a stop at Delmar Boulevard, serving the popular Delmar Loop and located just below the original Wabash Railroad's Delmar Station building. The Red Line meets up with the Blue Line at the Forest Park-DeBaliviere station. From this station to the Fairview Heights station in Illinois, it creates the Shared Alignment track with the Blue Line. It terminates in Shiloh next to the Scott Air Force Base and close to the Mid-America Airport in Mascoutah.
 Passage 2:The Dhoom series began with the release of Dhoom in 2004. The film became a commercial box office hit and received generally positive reviews from audiences, but not so much from critics. As a result, producer Yash Chopra announced plans for a sequel, titled Dhoom 2: Back in Action. John Abraham, portrayer of Kabir Sharma, the villain of the predecessor, was eliminated from the sequel because Chopra did not want Dhoom 2 to repeat the stories featured in its predecessor. Instead, Hrithik Roshan and Aishwarya Rai were introduced into the franchise as the sequel's main villains. Aishwarya Rai's character was summarised as Catwoman, a female fictional comic book femme fatale or anti-hero . Rai stated, "All I can tell you is it would be nothing like anything you've seen me do before." Producer Aditya Chopra told Rai to lose weight after she gained it for her role in 2004's Bride & Prejudice. Yash Chopra stated, "But yes, the role does require Aishwarya to convey oodles of sensuality. She has asked for a couple of months to get into shape. We (at Yash Raj Films) are very clear about every character in every script and what's required of the actors. Before Dhoom, Esha Deol was specifically briefed about the look and the attitude she needed to cultivate. She readily agreed, and look at what Dhoom did to her career!" Roshan also lost twelve pounds of weight at Aditya Chopra's request. With the exception of Abraham and Esha Deol, all of the other main actors in Dhoom were hired again for Dhoom 2.
 Passage 3:There have been a number of car accidents involving Korean idols being followed by sasaeng fans. In 2011, two members of the band Super Junior were caught in a six-car collision after being chased by eight fan vehicles in Singapore. The band members, Leeteuk and Heechul, were unharmed, but Heechul later tweeted that he still suffered after-effects from the accident and was often afraid to drive. In 2013, Seungri, formerly of the band Big Bang, suffered minor injuries in a car accident in Shanghai involving a sasaeng fan. In 2015, Chanyeol of the band Exo wrote on Weibo that he was constantly followed by 20 fan vehicles during a visit to Shanghai. In 2016, Jackson of Got7 sustained minor injuries in an accident on the way to an airport in China that involved a fan closely following his car.

Example Output: 3

Example Input: Question: How long had Chiyoda Corporation been in business when the Flue-gas desulfurization equipment they helped Black & Veatch design was installed? Passage 1:During construction of Unit 4, a cooling tower was commissioned by Cincinnati Gas and Electric (CG&E) (a forerunner of Duke Energy) in order to meet pollution control mandates set by the State of Ohio. Its four smokestacks were upgraded with electrostatic precipitators to prevent fly ash from being released into the atmosphere. Stuart was the test site for the Low- Cell Burner (LNCB) designed by Babcock & Wilcox. The LNCB project utilized Unit 4 over a duration of 53 months from 1990–1994. The test confirmed that a LNCB can reduce nitrogen oxide () emissions by more than 50%, but the carbon monoxide (CO) emissions were inconclusive. Each unit at Stuart were retrofitted with selective catalytic reduction (SCR) systems between 2003–2004 by Black & Veatch. The SCRs were installed to comply with the Clean Air Act's 1990 amendments and Ohio's State Implementation Plan (SIP). Flue-gas desulfurization (FGD) equipment, designed by Black & Veatch with assistance from the Chiyoda Corporation was installed at J.M. Stuart in 2008. The FGD equipment reduced 97% of the plant's sulfur dioxide () emissions. In order to support the FGD process, a smokestack was constructed.
 Passage 2:Trnka emerged into public view in 1988 when it was revealed by Wolfgang Plath that he was the composer of two minor works previously attributed to Wolfgang Amadeus Mozart. Trnka's compositional specialization appears to have been canons, a form of music at the time often sung recreationally among friends. According to Link, at least 61 canons by Trnka survive, and all but one are to lyrics by the famous librettist Metastasio. Mozart enjoyed singing canons with his friends (see "Difficile lectu"), and particularly liked canons with humorous scatological lyrics, of which he composed several himself (see Mozart and scatology). In the present case, Mozart evidently took two canons by Trnka and gave them new lyrics, which he probably wrote himself. Trnka's "Tu sei gelosa, è vero" became Mozart's "Leck mir den Arsch fein recht schön sauber" ("Lick me in the ass right well and clean"), and Trnka's "So che vanti un cor ingrato" became Mozart's "Bei der Hitz im Sommer eß ich" ("In the heat of summer I eat"). These works were mistaken as Mozart's compositions when his widow Constanze sent them as part of a bundle of canons in 1800 to the publisher Breitkopf & Härtel, who four years later duly published them as Mozart's work. They entered the standard Köchel catalogue as K. 233 and K. 234 (K 382e).
 Passage 3:He attended De La Salle College, Mangere East, and started his rugby league career with the Papatoetoe Panthers, later moving to Otahuhu, and playing in Auckland Rugby League competitions. As a member of Otahuhu, Ah Mau played for the Tamaki Titans in the Bartercard Cup. Ah Mau played for the Junior Kiwis in 2006 and the New Zealand under-18 side in 2007. Ah Mau was signed to a developmental contract with the Warriors in 2007. During his first year with the club he played 18 games in the NSWRL Premier League for the Auckland Lions. In 2008 he played in the inaugural season of the Toyota Cup, making 22 appearances for the Junior Warriors. He finished his Toyota Cup career with 40 appearances, 9 tries and 1 goal.

Example Output:
1