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 Input:
Question: Which of the lines that uses the A-series trains began first? Passage 1:NSB Class 73 () is a class of 22 electric multiple units built by Adtranz for the Norwegian State Railways. The four-car trains were modifications of Class 71, which was again based on the Swedish X2. The A-series consists of 16 intercity trains; they were delivered in 1999 and 2000 and are used on the Bergen, Dovre and Sørland Lines. The intercity service was branded as Signatur until 2003. The B-series consists of six regional trains delivered in 2002 and used on the Østfold Line. The regional trains were originally part of the Agenda concept. The trains have a power output of and a maximum speed of . They have an overall length of and have a capacity for 208 seated passengers in the A-series and 250 in the B-series. The trains have a tilting mechanism allowing for faster travel through curves.
 Passage 2:Sculptures of Tubman have been placed in several American cities. A 1993 Underground Railroad memorial fashioned by Ed Dwight in Battle Creek, Michigan features Tubman leading a group of slaves to freedom. In 1995, sculptor Jane DeDecker created a statue of Tubman leading a child, which was placed in Mesa, Arizona. Copies of DeDecker's statue were subsequently installed in several other cities, including one at Brenau University in Gainesville, Georgia. It was the first statue honoring Tubman at an institution in the Old South. The city of Boston commissioned Step on Board, a 10-foot-tall bronze sculpture by artist Fern Cunningham placed at the entrance to Harriet Tubman Park in 1999. It was the first memorial to a woman on city-owned land. Swing Low, a 13-foot statue of Tubman by Alison Saar, was erected in Manhattan in 2008. In 2009, Salisbury University in Salisbury, Maryland unveiled a statue created by James Hill, an arts professor at the university. It was the first sculpture of Tubman placed in the region where she was born.
 Passage 3:Creditsafe was founded in 1997 in Oslo, Norway with the idea of using the then emerging technology of the internet to supply business information to a market of smaller and medium-sized businesses by selling over the telephone and delivering reports over the internet. Following the Norwegian launch Creditsafe established an office in Gothenburg Sweden in 1998 before moving to the UK in 2000. Creditsafe re-located the UK sales operation to Caerphilly in South Wales in 2002. In 2006 Creditsafe France was launched in Roubaix near Lille. Additional entities were later launched in Dublin in Ireland in 2007, The Hague in the Netherlands in 2008, Berlin, Germany in 2010, Brussels, Belgium in 2011 and Turin in Italy in 2013. Creditsafe moved outside Europe in 2012 with the founding of Creditsafe United States in Allentown, Pennsylvania. Since launching in the USA, Creditsafe have now increased its US workforce by opening a new office in Tempe, Arizona Creditsafe established a shared service centre in Cardiff Bay, Wales in 2006 which has grown to support the sales operations around the world. In September 2016, Creditsafe set up its own operation in Japan. has its offices in Fukuoka and Tokyo


Ex Output:
1


Ex Input:
Question: Which team won the tournament that Harvard was eliminated from by UNC in 2015? Passage 1:Bundrick first worked with Pete Townshend in 1977 when he performed on Rough Mix, Townshend's solo collaboration with Ronnie Lane, former bass player for Small Faces and Faces. He was invited to play on the Who's album Who Are You (1978), but broke his arm falling out of a taxi at the studio door and was unable to participate in recording sessions. Bundrick toured with The Who from 1979 to 1981 along with drummer Kenney Jones and played on their album Face Dances (1981), then briefly parted with the band during the recording of It's Hard (1982) and the subsequent tour. Bundrick later rejoined the band performing with them at Live Aid in 1985 and played live with them until 2012.
 Passage 2:The book discusses four prehistoric migrations in India. The book mentions that the Harappans were a mixture of Zagros agriculturists and First Indians, a wave of migrants who came from Africa into Arabia and then reached India around 65,000 years ago. Citing recent DNA evidence, the book traces the subsequent large migrations of anatomically modern humans into India—of agriculturalists from Iran between 7000 and 3000 BCE and Indo-European languages speaking pastoralists from the Central Asian Steppe (Aryans) between 2000 and 1000 BCE, among others. Tony Joseph used pizza as a metaphor to explain the break-up of subcontinental society. The book also discusses about similarities and differences between Indus Valley civilization and early Vedic civilization. The book mentions that ‘Aryan’ culture was most likely the result of interaction, adoption and adaptation among those who brought Indo-European languages to India and those who were already well-settled inhabitants of the region, and that Sanskrit and Vedas developed in the Indian subcontinent. Various tribes like the Andamanese and the Semang (Malay Peninsula), the Mani (Thailand) and the Aeta people (the Philippines) were the earliest inhabitants of Southeast Asia. According to Joseph, Proto-Dravidian is related to the Elamitic language of Iran. Caste system in India is a recent social system, reflected in sharply reduced inter-marriage (endogamy) and genetic mixing after 100 AD. This book also takes into account the path-breaking DNA research and findings from geneticist David Reich's research.
 Passage 3:Harvard Crimson men's basketball program represents intercollegiate men's basketball at Harvard University. The team currently competes in the Ivy League in Division I of the National Collegiate Athletic Association (NCAA) and plays home games at the Lavietes Pavilion in Boston, Massachusetts. The team appeared in the NCAA Division I Men's Basketball Tournament in 2014, where Harvard upset 5-seed Cincinnati 61–57 before being eliminated in the round of 32 by 4-seed Michigan State by a score of 80–73. In 2015, Harvard tied with Yale for the Ivy title with an 11–3 league record. Despite having lost to Yale 62–52 at Lavietes Pavilion on March 6, 2015, just eight days later Harvard won a playoff between the two at the Palestra in Philadelphia to determine the Ivy League's NCAA automatic bid by a score of 53–51. Harvard thereby achieved its fourth straight NCAA Tournament appearance while preventing Yale from reaching the NCAA Tournament for the first time in 53 years. Harvard was eliminated from the 2015 NCAA Tournament by UNC by a score of 67–65 after leading with under one minute to play in the game. 


Ex Output:
3


Ex Input:
Question: What is the population of the city founded by William Byrd II? Passage 1:Coal mining in the Midlothian area of Chesterfield County began in the 18th century. Around 1701, French Huguenot settlers to the area discovered the existence of the coalfield. The coalfield was part of the Richmond Basin which is one of the Eastern North America Rift Basins which contains some sedimentary rock and bituminous coal. In a 1709 diary entry William Byrd II, who is credited as the founder of Richmond, and had purchased of land in the area where coal was found, noted that "the coaler found the coal mine very good and sufficient to furnish several generations." It was first commercially mined in the 1730s, and was used to make cannon at Westham (near the present Huguenot Memorial Bridge) during the American Revolutionary War.
 Passage 2:Robert Elwes travelled extensively in his twenties and thirties, but in 1848 he embarked on a journey that was to take him round the world. Robert Elwes, aged 28, left England on 20 March 1848 on board the Eclipse. This voyage around the world took two years and three months, sailing on 10 different ships. He painted and sketched many scenes on his journey. He arrived in Rio de Janeiro, Brazil, having crossed the Atlantic from Tenerife in 30 days. He explored a little of Brazil and then sailed to Buenos Aires, Argentina. He crossed the Pampas on horseback, a journey of 1,000 miles, crossing the Andes by mule and up the Pacific coast to Lima. He sailed across the Pacific to Honolulu and Tahiti and was shipwrecked off Tasmania in September 1849. Rescued by sealers and taken to Hobart with a cargo of 500 sheep, he then travelled overland across Tasmania to Launceston where he sailed (nervously) for Australia.
 Passage 3:The 118th Infantry Regiment traces its lineage to the year 1846, when the 1st South Carolina Volunteer Infantry was organized for duty in the Mexican–American War. Company E, "Johnson's Rifles", lives on today as 4–118. During the American Civil War, the 1st South Carolina Volunteer Infantry was reorganized into units of the First Corps, Army of Northern Virginia, under General James Longstreet in 1861. The battalions of the South Carolina regiment first saw action at the First Battle of Bull Run, where the Union Army was defeated. They next fought in the Peninsula Campaign, and eventually had to retreat from General George B. McClellan's forces at the Battle of Williamsburg in mid-1862. Shortly after, the South Carolinians fought again at the Battle of Seven Pines, where the Union advance on Richmond, Virginia was stopped even though the Confederate forces did not deliver a decisive defeat. Longstreet's Corps recovered from the losses of the Peninsula Campaign and defeated the Union at the Battle of Gaines's Mill 26 days later, and followed the victory by decisively defeating the Union Army in the Second Battle of Bull Run. The battalions of the original 1st South Carolina took part on the Battle of Antietam on 17 September 1862, the bloodiest single-day battle in American history, with a combined tally of 22,717 dead, wounded, or missing.


Ex Output:

1