Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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: 1
Reason: The question refers to the 704th unit and task about war which is decribed by Passage 1.

Now, solve this instance: Question: When did the opera house where  Elsa Cavelti sang leading dramatic contralto in 1944 open? Passage 1:In 1944, she returned to Switzerland, singing as the leading dramatic contralto at the Opernhaus Zürich. She appeared as Brangäne in Wagner's Tristan und Isolde, as Fricka in his Die Walküre, as Ortrud in his Lohengrin, and in the title role (Octavian) of Der Rosenkavalier by Richard Strauss, among others. In 1949, she took part in the premiere of Willy Burkhard's Die schwarze Spinne. The same year, she performed in Monteverdi's L'incoronazione di Poppea, both at Vicenza's Teatro Olimpico and at La Fenice in Venice. She performed as a guest at La Scala in Milan several times, including Octavian, Brangäne, Venus in Wagner's Tannhäuser, and the title role of Honegger's Judith. She appeared as a guest at the Vienna State Opera, in Belgium, France, United Kingdom, in Argentina, and the US.
 Passage 2:Eduard Jan Bomhoff was born on 30 September 1944 in Amsterdam in a Old Catholic family as the son of Jacobus Gerardus Bomhoff a Minister and professor of literature and Riet van Rhijn. The family moved in 1957 to Leiden. Bomhoff attended the Stedelijk Gymnasium Leiden and went to Leiden University. After earning a Master of Economics there he received the Doctor of Philosophy degree in economics from the Erasmus University Rotterdam in 1979. Bomhoff worked as a lecturer in monetary policy there. He earned the rank of professor in 1981, and served as director of the Rochester-Erasmus Executive Master of Business Administration program from 1986 to 1989. He later served as a professor of finance at the Nyenrode Business Universiteit. In addition to his academic career, Bomhoff founded the institute in 1995, an economic research institute designed as an alternative to the official Bureau for Economic Policy Analysis. Bomhoff was also a columnist for the NRC Handelsblad from 1989 until 2002.
 Passage 3:"Don't Be So Hard on Yourself" was written by Jess Glynne, Wayne Hector with its producers Tom Barnes, Peter Kelleher and Ben Kohn, also known as the production team TMS. According to the sheet music published at Musicnotes.com by Universal Music Publishing Group, the song is written in the key of G major (recorded a half-step lower in F major). The song moves in common time at a tempo of 120 beats per minute, with Glynne's vocal range spanning from the low-note of C to the high-note of C. Its instrumentation consists in piano, guitar and violins, filled with strings, glittery synths and emotive vocals. In its bridge, the song also features a "multi-tracked choir and military tattoo drums." It is a dance-pop song with influences of disco, house and soul-pop. Lyrically, it talks about overcoming a broken heart and to not let sadness defeat you. In the chorus, she sings: "Don’t be so hard on yourself, no / Learn to forgive, learn to let go / Everyone trips, everyone falls / So don’t be so hard on yourself, no." When asked about the story behind the song, she elaborated: "When I was meeting my publisher, managers and label and everything was happening for me, I was going through a really hard time. I had my heart broken and I was in a dark place. It was even harder because my dreams were coming true and I had to put a smile on my face every day and power through."

Student:
1