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: What city did Stevens complete a Ph.D. in? Passage 1:The siblings were born in New Haven, Connecticut, and moved to Downey, California, in 1963. Richard took piano lessons as a child, progressing to California State University, Long Beach, while Karen learned the drums. They first performed together as a duo in 1965 and formed the jazz-oriented Richard Carpenter Trio followed by the middle-of-the-road group Spectrum. Signing as Carpenters to A&M Records in 1969, they achieved major success the following year with the hit singles "(They Long to Be) Close to You" and "We've Only Just Begun". Subsequently, the duo's brand of melodic pop produced a record-breaking run of hit recordings on the American Top 40 and Adult Contemporary charts, and they became leading sellers in the soft rock, easy listening and adult contemporary music genres. The Carpenters had three number-one singles and five number-two singles on the Billboard Hot 100 and fifteen number-one hits on the Adult Contemporary chart, in addition to twelve top-10 singles. They have sold more than 90 million records worldwide, making them one of the best-selling music artists of all time. The duo toured continually during the 1970s, which put them under increased strain; Richard took a year off in 1979 after he had become addicted to Quaaludes, while Karen suffered from anorexia nervosa.
 Passage 2:In 1980, Stevens joined the Army under their split option training program and conducted basic training at Fort Dix, New Jersey and advanced individual training at Fort Sam Houston, Texas. While engaged in his military service, Stevens entered the University of Southern Maine in the Computer Science program in 1981. However, an enthusiastic professor (John Ricci) converted him to the study of Chemistry. He spent two summers working as an intern at the Brookhaven National Laboratory in Long Island with Professor Ricci, and Drs. Thomas Koetzle and Dick McMullan, where he first learned how to determine the molecular structure of compounds by X-ray and neutron diffraction. While there he also met a University of Southern California research team led by Dr. Robert Bau; after he obtained a Bachelor of Science degree in Chemistry at USM, he entered the University of Southern California in pursuit of a Doctor of Philosophy degree in Chemistry working with Professor Robert Bau and Nobel Laureate Professor, George Olah. He completed his Ph.D. in 26 months, graduating in 1988.
 Passage 3:The 1966 NASCAR season opened at Augusta Speedway on November 14, 1965, with Richard Petty winning the season opening event in a 1965 Plymouth. NASCAR then ventured to Riverside International Raceway where Dan Gurney took the checkered flag in a 1965 Ford. After the January 23rd Riverside event, the drivers and teams traveled to Daytona International Speedway in Florida for the 1966 Daytona 500. Paul Goldsmith and Early Balmer took the qualifying events, while Richard Petty notched his first and only Daytona 500 pole position. Petty came from two laps down during the competition to win by more than a full lap when the race was halted 2 laps shy of scheduled event due to thunderstorms. In March Paul Goldsmith won at Rockingham Speedway, Dick Hutcherson at Bristol, and Jim Hurtubise captured the checkered flag at Atlanta Motor Speedway. Hutcherson's victory at Bristol was by more than 4 laps over the closest competitor, Paul Lewis, when crashes and attrition left only seven cars of the 38 starters running at the end of the Southeastern 500 (now known as Food City 500). On April 3, Pearson finally found his way to victory lane in the first of four consecutive victories at Hickory Motor Speedway. He followed up with wins at Columbia Speedway, Greenville, and Winston-Salem, before Jim Paschal broke his streak at North Wilksboro and repeated at Martinsville Speedway. On May 7, Richard Petty started a string of three consecutive wins at Darlington Raceway, Hampton, and Macon. After Ford's announcement of their boycott of NASCAR on April 7, only 2.500 fans attend the May 13th event in which Darel Dieringer captures the win at Monroe in a contest.

Example Output: 2

Example Input: Question: How many people currently live in the city that was captured in 1630 by a Persian army? Passage 1:Gradually Clayburgh shifted into being more of a supporting character actress in the 90s, taking on roles as diverse as an antagonistic judge in Trial: The Price of Passion (1992) and the interfering wife of Alan Alda's character in Whispers in the Dark (1992). After appearing in Ben Gazzara's Beyond the Ocean (1990), which was shot in Bali, and the unreleased Pretty Hattie's Baby (1991), she became typecast as an attractive maternal figure: she was the long-missing matriarch in Rich in Love (1992), a wheelchair-bound mom in Firestorm: 72 Hours in Oakland (1993) and Eric Stoltz's single mother in Naked in New York (1993). A review in People magazine felt Clayburgh "[did] her best as the footloose mother" in Rich in Love, while Roger Ebert praised her casting in Naked in New York as "exactly on target". She also played Kitty Menendez who was murdered by her sons in Honor Thy Father and Mother: The True Story of the Menendez Murders (1993), a role which Variety perceived to be "incomplete, but that has more to do with the script than Clayburgh’s performance." She continued to play concerned, protective mothers in For the Love of Nancy (1994), The Face on the Milk Carton (1995), Going All the Way (1997), Fools Rush In (1997), When Innocence Is Lost (1997) and Sins of the Mind (1997), and was in "good form" as the forceful, pushy stage mother in Crowned and Dangerous (1997).
 Passage 2:A son of Daud Khan, a Georgian prince and convert to Islam, by a concubine, he was born Khosro Mirza and brought up Muslim at the Persian court by eunuchs alongside young slave recruits. An intelligent and resolute in his decisions, he soon attracted the attention of Shah Abbas I of Safavid who appointed him, in 1618, a darugha (prefect) of the capital Isfahan. From 1625 to 1626, he took part in suppression of the Georgian opposition: he commanded a right flank at the victorious Battle of Marabda and saved part of the Persian troops from a complete disaster at the Battle of Ksani. In 1626, Khosro Mirza was recalled from Georgia and appointed the commander of the Shah's élite gholam corps (qollar-aghasi) three years later. In 1629, Abbas, lying on a deathbed, urged him to protect a grandson and heir Sam Mirza, the future Shah Safi, whom Khosro served faithfully. In 1630, he led a Persian army which defeated the Ottoman forces and captured Baghdad. In the early 1630s, he took part in sidelining and destruction of the Undiladze family, also of Georgian origin, who had dominated the Safavid court for years. Afterwards, he was sent to suppress the opposition of Georgians who had managed to unite the eastern regions of Kartli and Kakheti under Teimuraz I for a brief period of 1630-1633. Teimuraz was joined by a surviving Undiladze, Daud Khan. For his loyalty, Shah Safi appointed him as the new vali of Kartli, and granted him the name of Rostam Khan (Rostom, როსტომი, in Georgian transliteration). Rostom then came to Georgia with a large Persian army commanded by his fellow Georgian Rustam Khan. He soon took control of Kartli and garrisoned all major fortresses with Persian forces, bringing them, however, under his tight control. His willingness to cooperate with his suzerain won for Kartli a larger degree of autonomy. A period of relative peace and prosperity ensued, with the cities and towns being revived, many deserted areas repopulated and commerce flourished. Although Muslim, Rostom helped to restore a major Georgian Orthodox cathedral of Living Pillar (Svetitskhoveli) at Mtskheta, and patronised Christian culture. However, Islam and Persian habits predominated at his court. He ruthlessly crushed an opposition of local nobles, putting to death the catholicos Eudemus I of Georgia, and invaded, in 1648, Kakheti, forcing Teimuraz to flee to Imereti (western Georgia).
 Passage 3:Ferrary was the son of the Duke and Duchess of Galliera. His father, Raffaele de Ferrari, came from an ancient and rich family of Genovese bankers and was a wealthy businessman made Duke of Galliera in Genoa by Pope Gregory XVI, and Prince de Lucedio by Victor-Emmanuel II, King of Italy. Raffaele de Ferrari was co-founder of the Crédit Mobilier with the Péreire brothers, rivals of the Rothschilds, who financed many of the major construction projects of the second half of the 19th century: railroads in Austria, Latin America, Portugal, upper Italy and France (the Paris-Lyon-Marseille line), the digging of the Fréjus Rail Tunnel and the Suez Canal, and the reconstruction of Paris designed by Baron Haussmann. It is said that Raffaele de Ferrari died stuck in one of his immense safes.

Example Output: 2

Example Input: Question: How old was the railway that was laid on Wheatfield road in 1894? Passage 1:Along with adjacent Newton County, Searcy is unique among Arkansas counties in being traditionally Republican in political leanings even during the overwhelmingly Democratic "Solid South" era. This Republicanism resulted from their historical paucity of slaves, in turn created by infertile soils unsuitable for intensive cotton farming, and produced support for the Union during the Civil War. These were the only two counties in Arkansas to be won by Alf Landon in 1936, Wendell Willkie in 1940, Charles Evans Hughes in 1916, and even Calvin Coolidge in 1924. In Presidential elections post-1932, Harry S. Truman and Jimmy Carter are the only Democrats to carry the county. In the 1992 election George H. W. Bush won his second-highest margin in the state, and the Republican nominee has received over 60 percent in Presidential elections from 2000 to 2012 inclusive. In 2016, Searcy County voted over 79 percent for Donald Trump, while former Arkansas First Lady Hillary Clinton received just 16 percent.
 Passage 2:During the Battle of Gettysburg, the dirt Wheatfield Road was used by various Union and Confederate troops (e.g., Crawford's Third Division of Pennsylvania Reserves), and Union troops deployed artillery westward to the Peach Orchard using the road. In 1884, the Round Top Branch's wye with double spurs and station was built at the east end of Wheatfield Road, and in 1894 the Gettysburg Electric Railway was laid along a west portion of the road (trolleys also crossed the east end near Round Top Station). In 1895, the Commonwealth of Pennsylvania ceded jurisdiction of Wheatfield Road to the War Department, and in 1900 two cast iron identification tablets were placed to label the road. The Gettysburg Electric Railway tracks were removed from the Wheatfield Road in 1917 and the road was repaired in 1931. The Wheatfield Road was resurfaced with asphalt west of Sykes Avenue in 1933, and completed "from the Rosensteel pavilion to the Taneytown road" in 1940 by the McMillan Woods Civilian Conservation Corps camp.
 Passage 3:Rigden was editor of the American Journal of Physics from 1975 to 1985. In 1987, he joined the American Institute of Physics, where he served as Director of Physics Programs. In 1992, he was appointed Director of Development of the National Science Standards Project at the National Academy of Sciences. In 1995, he was elected chairman of the History of Physics Forum of the American Physical Society (of which he was a fellow). He also served on committees for the American Association of Physics Teachers, the American Physical Society, the American Association for the Advancement of Science (of which he was also a fellow), and the National Academy of Sciences. He served as a National Science Foundation (NSF) consultant to the country of India in 1968 and again in 1969. He was the United States Representative to the International Science Exhibition in Rangoon Burma in 1970. He was also a Fulbright Fellow to Burma in 1971 and to Uruguay in 1975.

Example Output:
2