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: 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.

[EX A]: 2

[EX Q]: Question: Did the first rail line in Israel take longer to build than the second line? Passage 1:Aronson's mother family came from Łódź. After the German invasion of Poland in 1939, they first moved from Łódź to Warsaw. After a few days, they decided to move further east to the Kresy, where near Równo their relatives owned some land. However, in the meantime the Soviet Union also invaded Poland as part of the Molotov-Ribbentrop Treaty between the Soviet Union and Nazi Germany, and the relatives were arrested by the NKVD and deported eastwards, deep within the Soviet Union. As a result, the family tried to unsuccessfully enter Lithuania, and then into Romania. Eventually they wound up in Soviet-occupied Lwow. According to Aronson, in Lwow, the Soviets pressured Poles, Ukrainians and Jews to sign up for the Komsomol but he personally refused.
 Passage 2:Episodes of the show often featured Ed Grimley in several adventures, which start out as mundane, but turn very surreal and cartoonish, interspersed with science lessons from The Amazing Gustav Brothers, Roger and Emil, and a live-action segment with a "scary story" titled The Count Floyd Show presented as a show-within-a-show by Grimley's favorite television host, SCTV's Count Floyd (played by SCTV cast member Joe Flaherty). Grimley's fellow cartoon characters included Grimley's landlord Leo Freebus (voiced by Jonathan Winters), Leo's wife Deidre (voiced by Andrea Martin), his ditzy, amateur actress neighbor Ms. Malone (voiced by Catherine O'Hara; a female character by the name of Ms. Malone did appear on an SNL version of an Ed Grimley sketch on the season ten episode hosted by Alex Karras, but Ms. Malone was played by that episode's musical guest Tina Turner), and her little brother Wendell (voiced by Danny Cooksey). Ed owns a goldfish named Moby and a clever pet rat named Sheldon (voiced by Frank Welker). At the end of each episode, Ed would write in his diary about what happened in his day.
 Passage 3:Rail infrastructure in what is now Israel was first envisioned and realized during the Ottoman period. Sir Moses Montefiore, in 1839, was an early proponent of trains in the land of Israel. However, the first railroad in Eretz Yisrael, was the Jaffa-Jerusalem railway, which opened on September 26, 1892. A trip along the line took 3 hours and 30 minutes. The line was initiated by the Jewish entrepreneur Joseph Navon and built by the French at 1 m gauge. The second line in what is now Israel was the Jezreel Valley railway from Haifa to Beit She’an, which had been built in 1904 as part of the Haifa-Daraa branch, a 1905-built feeder line of the Hejaz Railway which ran from Medina to Damascus. At the time, the Ottoman Empire ruled the Levant, but was a declining power and would succumb in World War I. During the Ottoman era, the network grew: Nablus, Kalkiliya, and Beersheba all gained train stations. The First World War brought yet another rail line: the Ottomans, with German assistance, laid tracks from Beersheba to Kadesh Barnea, somewhere on the Sinai Peninsula. (This line ran through trains from Afula through Tulkarm.) This resulted in the construction of the eastern and southern railways.

[EX A]: 3

[EX Q]: Question: How many of the previous presidential elections used a first-past-the-post system? Passage 1:Roosevelt won his home state by means of a dominance of the massively populated New York City area, performing even more strongly than he had in 1932. Roosevelt took over seventy percent of the vote in the boroughs of Manhattan, Brooklyn, and the Bronx, and took over sixty percent of the vote in Queens and Staten Island. For the era, this was an historically overwhelming victory for a Democratic presidential candidate in the five boroughs of New York City, and enough to easily secure a statewide win for Roosevelt. The emergence of the New Deal Coalition was at its peak in 1936, and made American cities with their powerful political machines core bases of support for the Democratic Party. The Great Depression had accelerated the process of urbanization of the Democratic Party which had begun with the election of 1928. Roosevelt’s landslide win in New York City was a fruit born by this process, and over the whole nation he achieved majorities in the largest cities totalling twice what Harding had achieved in 1920. 1936 was the third election in a row in which Democrats had won all five boroughs of NYC, following 1928 and 1932. After 1936, New York City would remain Democratic overall in every election that has followed, although no presidential candidate would sweep all five boroughs of NYC again until Lyndon Johnson in 1964. Partly as a consequence of this, FDR’s 1936 victory in New York State would also be the strongest statewide Democratic performance ever in terms of both margin and vote share until 1964.
 Passage 2:In the late 1880s, the small, former colony settlement of Broome located on Roebuck Bay in the north of Western Australia consisted of two stores and a few scattered houses. It had no road or rail connection to the south of the Colony and depended on limited sea transport for its supplies and communication. It was not until 1872 that Australia was connected overseas by submarine telegraphic cable, when a cable was laid from Banjoewangie in Java to Darwin. A second cable, paralleling the first, was laid in 1880. Due to frequent breaks in the cable as a result of submarine volcanic activity, there arose an urgent need to lay a third cable, away from the seismic zone.
 Passage 3:Presidential elections were held in South Korea on 19 December 2012. They were the sixth presidential elections since democratization and the establishment of the Sixth Republic, and was held under a first-past-the-post system, in which there was a single round of voting and the candidate receiving the highest number of votes was elected. Under the South Korean constitution, presidents are restricted to a single five-year term in office. The term of incumbent president Lee Myung-bak ended on 24 February 2013. According to the Korea Times, 30.7 million people voted with turnout at 75.8%. Park Geun-hye of the Saenuri party was elected the first female South Korean president with 51.6% of the vote opposed to 48.0% for her opponent Moon Jae-in. Park's share of the vote was the highest won by any candidate since the beginning of free and fair direct elections in 1987.

[EX A]:
3