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.

Input: Consider 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


Output: 1


Input: Consider Input: Question: Which actor was cast as the title role in the Batwoman series following her appearance in the crossover? Passage 1:In May 2018, The CW president Mark Pedowitz and Arrow lead Stephen Amell announced at The CW's upfront presentation that Batwoman, fighting alongside the other Arrowverse heroes, would be introduced in the upcoming crossover. The fictional Gotham City would also appear. Despite the inclusion of the character and city, the crossover would not include the television series Gotham that airs on Fox. That July, the CW was planning a potential standalone Batwoman series after her appearance in the crossover; Caroline Dries, who was creating and writing the potential Batwoman series, was expected to consult on the crossover. It was confirmed that Legends of Tomorrow would not feature in the crossover. Legends of Tomorrow co-showrunner Phil Klemmer said because the crossover was being used to launch the Batwoman-led series, "it just became over capacity", and that because Legends of Tomorrow would have a 16-episode season, the crossover would have been "a tonal speed-bump, or a departure, and we just don't have time to step away from our story this year". Despite not being part of the official crossover, Legends of Tomorrow co-showrunner Keto Shimizu revealed "Legends of To-Meow-Meow", the show's episode airing the week of the crossover, would be "crossing over with ourselves" through the use of alternate time periods, and Adam Tsekhman guest stars as Gary Green in the Supergirl episode.
 Passage 2:Giunta was born in Ottawa to Colleen Wrighte and Michael Giunta. She has a brother, Macallan, and a sister, Marley. Giunta sang in the Ottawa Central Children's Choir from age 9 to 15, and began voice training with Charlotte Stewart in Ottawa at age 13. She attended Lisgar Collegiate Institute, and graduated high school from Glebe Collegiate Institute. At 17, she began her post-secondary studies in voice at The University of Ottawa, completing freshman and sophomore years. She then transferred to The Glenn Gould School of The Royal Conservatory of Music in Toronto in her junior year, receiving her Performance Diploma (Voice) at age 21 and her Artist Diploma (Voice) at age 23. While a student, she achieved first place in the Royal Conservatory Orchestra Concerto Competition. She attended training programs at the Aspen Music Festival and School, the Ravinia Festival, the Internationale Meistersinger Akademie, the Georg Solti Accademia and the Banff Centre. She graduated from the Canadian Opera Company Ensemble Studio in 2011, and both the Metropolitan Opera Lindemann Young Artist Development Program and The Juilliard School Artist Diploma in Opera Studies in 2013. She has studied extensively with both Jean MacPhail in Toronto, and Edith Wiens in New York.
 Passage 3:He played for a variety of sides in two stints in the National Soccer League. The first stint was played almost entirely for Sydney United, for whom he played as a junior, and which culminated in playing in their runner-up 1996/97 side. After that season he moved to NAC Breda in the Netherlands, and after 2 seasons there went to Croatia's NK Rijeka, where he was the club's top scorer in 2000/01 with 10 goals. On his return to the NSL in season 2001/02, he rejoined Sydney United for a brief stay, before moving to city rival Sydney Olympic during the same season. He would spend the rest of the season and the next playing there, including scoring the only goal of the 2001/02 Grand Final against Perth Glory. In the final he was awarded the Joe Marston Medal, delivering Sydney Olympic their second NSL title, as well as playing in the runner up side the following season against Perth Glory.


Output: 1


Input: Consider Input: Question: Which of the two rivers the Panzer Corps crossed was larger? Passage 1:As designed in 1931, the He 46 was a two-seat sesquiplane of mixed construction. The upper wing was swept back 10°. This is a common trick when a change in an aircraft's design moves the center of gravity to the rear; rather than moving the whole wing back to counter for the shift, it is easier to simply angle the wings back slightly, which requires very little change to the basic design, or even the overall structure of the wing. (The similarly angled wings on the Fairey Swordfish are due to just such a mid-program change to the weight distribution of the aircraft.) The tailplane was mounted high and braced by struts. The undercarriage was fixed, and the tail was fitted with a skid rather than a wheel. The He 46 prototype first flew in late 1931; its flight characteristics were good, but design improvements were incorporated. The small lower wing was removed, while the mainplane was increased in area by 22% and braced to the fuselage, transforming the He 46 into a parasol-wing monoplane. A more powerful engine was added to the second prototype, and a single 7.92 mm (.312 in) MG 15 machine gun for the rear seat was added to the third prototype.
 Passage 2:In planning for the actual attack, Manteuffel had divided his 5th Panzer Army into three corps composed of infantry, tanks, and supporting artillery. The main effort, or schwerpunkt, would consist of XLVII Panzer Corps and LVIII Panzer Corps advancing west across the River Our at Ouren from the south or left flank of the German army front. They would then occupy the transportation center of Bastogne, before crossing the Meuse River at Namur. The third group, LXVI Corps, would advance west on either side of the Schnee Eifel. This northernmost, or right wing, element would flank and begin an envelopment of the American forces occupying fortifications on the Schnee Eifel and then converge on the town of Winterspelt. From there, LXVI Corps would cross the Our river and occupy St. Vith on the first day of the attack. LXVI Corps was the weakest of the three corps, with no attached tank division or motor transport, but did include an attached assault gun battalion. The Panzer Lehr Division (Armor Demonstration Division) and the Führer Begleit Brigade (Führer Escort Brigade) were to be held in reserve, with the Führer Begleit only usable with Model's express permission. Manteuffel's preference for the "little slam", or limited solution, was reflected in the absence of planning beyond reaching the Meuse River.
 Passage 3:On 7 October 1593, the superintendent of the Venetian Republic founded a revolutionary new kind of settlement: Palmanova. The city’s founding date commemorated the victory of the Christian forces (supplied primarily by the Italian states and the Spanish kingdom) over the Ottoman Turks in the Battle of Lepanto in 1571, during the War of Cyprus. Also honored on 7 October was Saint Justina, chosen as the city's patron saint. Using all the latest military innovations of the 16th century, this small town was a fortress in the shape of a nine-pointed star, designed by Vincenzo Scamozzi. Between the points of the star, ramparts protruded so that the points could defend each other. A moat surrounded the town, and three large, guarded gates allowed entry. The construction of the first circle, with a total circumference of , took 30 years. Marcantonio Barbaro headed a group of Venetian noblemen in charge of building the town, Marcantonio Martinego was in charge of construction, and Giulio Savorgnan acted as an adviser. A second phase of construction took place between 1658 and 1690, and the outer line of fortifications was completed between 1806 and 1813 under the Napoleonic domination. The final fortress consists of: 9 ravelins, 9 bastions, 9 lunettes, and 18 cavaliers.
Output: 2