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.
One example: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage 1: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lô during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Passage 2: John Ford (1894–1973) was an American film director whose career spanned from 1913 to 1971. During this time he directed more than 140 films. Born in Maine, Ford entered the filmmaking industry shortly after graduating from high school with the help of his older brother, Francis Ford, who had established himself as a leading man and director for Universal Studios. After working as an actor, assistant director, stuntman, and prop man – often for his brother – Universal gave Ford the opportunity to direct in 1917. Initially working in short films, he quickly moved into features, largely with Harry Carey as his star. In 1920 Ford left Universal and began working for the Fox Film Corporation. During the next ten years he directed more than 30 films, including the westerns The Iron Horse (1924) and 3 Bad Men (1926), both starring George O'Brien, the war drama Four Sons and the Irish romantic drama Hangman's House (both 1928 and both starring Victor McLaglen). In the same year of these last two films, Ford directed his first all-talking film, the short Napoleon's Barber. The following year he directed his first all-talking feature, The Black Watch.
. Passage 3: Since the late 1970s, the central part of NYU is its Washington Square campus in the heart of Greenwich Village. Despite being public property, and expanding the Fifth Avenue axis into Washington Square Park, the Washington Square Arch is the unofficial symbol of NYU. Until 2008, NYU's commencement ceremony was held in Washington Square Park. However, due to space constraints, ceremonies are now held at the Yankee Stadium. Important facilities at Washington Square are the Elmer Holmes Bobst Library, designed by Philip Johnson and Richard Foster, who also designed several other structures, such as Tisch Hall, Meyer Hall, and the Hagop Kevorkian Center. When designing these buildings Johnson and Foster also set up a master plan for a complete redesign of the NYU Washington Square campus. However, it was never implemented. Other historic buildings include the Silver Center (formerly known as "Main building"); the Brown Building of Science; Judson Hall, which houses the King Juan Carlos I of Spain Center; Vanderbilt Hall, the historic townhouse row on Washington Square North; The Grey Art Gallery at 100 Washington Square East, housing the New York University art collection and featuring museum quality exhibitions; the Kaufman Management Center; and the Torch Club – the NYU dining and club facility for alumni, faculty, and administrators. Just a block south of Washington Square is NYU's Washington Square Village, housing graduate students and junior and senior faculty residences in the Silver Towers, designed by I. M. Pei, where an enlargement of Picasso's sculpture Bust of Sylvette (1934) is displayed.
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Solution is here: 1
Explanation: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Now, solve this: Question: In which country was a large metal hammer-head excavated? Passage 1:While in London performing at The Rainbow Theatre, Dingwall's, and trendy Cabaret Futura, the Bongos recorded their early singles and their well-received debut EP Time and the River for UK-based Fetish Records. Cover designs for their Fetish releases were created by influential graphic artist Neville Brody, who was soon to become the designer of The Face magazine. The group's love of avant-garde performers brought them in touch with artists such as Throbbing Gristle and Clock DVA who performed with them live in London, and on their recordings. Their debut U.S. album, Drums Along the Hudson, compiled from the band's British singles, was released in 1982 to widely favorable reviews on both sides of the Atlantic. While Trouser Press suggested that the group "may trade a certain amount of substance for easy appeal," it added that "there's no better musical equivalent of whipped cream anywhere." Writing in the Village Voice, Robert Christgau dryly commented that "for all their jumpy originality [the songs are] still slight, and Richard Barone's lyrics are so oblique you have to wonder what his angle is." In 2007 however, Jim DeRegotis wrote in the Chicago Sun-Times: "The initial impression of naiveté is offset by deceptively simple lyrics that actually hint at deep, dark mysteries and unfathomed mystical enigmas." The group's cover of T. Rex's "Mambo Sun" reached No. 22 on the Billboard Dance Chart. A thriving Hoboken pop scene emerged, triggered by the Bongos and Maxwell's, which gained national media attention, and drew many bands and fans to the city. An August 1, 1982 article in the New York Times Real Estate section hinted at the scene's popularity as an influence on increasing rents and property values.
 Passage 2:The main components for water-powered stamp mills – water wheels, cams, and hammers – were known in the Hellenistic era in the Eastern Mediterranean region. Ancient cams are in evidence in early water-powered automata from the third century BC. A passage in the Natural History of the Roman scholar Pliny (NH 18.23) indicates that water-driven pestles had become fairly widespread in Italy by the first century AD: "The greater part of Italy uses an unshod pestle and also wheels which water turns as it flows past, and a trip-hammer [mola]". These trip-hammers were used for the pounding and hulling of grain. Grain-pounders with pestles, as well as ordinary watermills, are also attested as late as the middle of the fifth century in a monastery founded by Romanus of Condat in the remote Jura region, indicating that the knowledge of trip hammers continued into the early Middle Ages. Apart from agricultural processing, archaeological evidence also strongly suggests the existence of trip hammers in Roman metal working. In Ickham in Kent, a large metal hammer-head with mechanical deformations was excavated in an area where several Roman water-mills and metal waste dumps have also been traced.
 Passage 3:Kalpathy Easwaran, born on 7 July 1939 in the South Indian state of Kerala in a brahmin family, graduated in science from Government Victoria College, Palakkad and secured his master's degree (MSc) from the University of Mumbai in 1962 to pursue his doctoral studies at the department of physics of the Indian Institute of Science, which he obtained in 1967. His post-doctoral research was at Tata Institute of Fundamental Research during 1966–67 and later at the University of Washington after which he spent a year at Jožef Stefan Institute as a visiting scientist. Returning to India in 1970, he resumed his career at the Indian Institute of Science, holding such positions as Astra Chair professorship (1994–97), Chair of the department of molecular biophysics (until 2006) and as Indian National Science Academy Senior Scientist (2006–07) until his superannuation in 2007. In between, he served as a visiting faculty at institutions such as Harvard Medical School, University of Connecticut, Georgetown University, United States Naval Research Laboratory and National University of Singapore. Post retirement, he is involved with ABL Biotechnologies, a Chennai-based biotechnology institution.

Solution:
2