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: Who designed Hans Klemm's first light aircraft? Passage 1:The head of the femur, which articulates with the acetabulum of the pelvic bone, comprises two-thirds of a sphere. It has a small groove, or fovea, connected through the round ligament to the sides of the acetabular notch. The head of the femur is connected to the shaft through the neck or collum. The neck is 4–5 cm. long and the diameter is smallest front to back and compressed at its middle. The collum forms an angle with the shaft in about 130 degrees. This angle is highly variant. In the infant it is about 150 degrees and in old age reduced to 120 degrees on average. An abnormal increase in the angle is known as coxa valga and an abnormal reduction is called coxa vara. Both the head and neck of the femur is vastly embedded in the hip musculature and can not be directly palpated. In skinny people with the thigh laterally rotated, the head of the femur can be felt deep as a resistance profound (deep) for the femoral artery.
 Passage 2:Born in Tel Aviv, Israel, on November 26, 1971, Huberman is the son of Holocaust survivors. He and his family moved to Oak Ridge, Tenn., when his father, a cancer researcher, began working at the Oak Ridge National Laboratory. Huberman attended the University of Wisconsin–Madison, graduating with a Bachelor's Degree in psychology and English in 1994. After graduation, he joined the Chicago Police Department where he initially served as a beat officer. While working full-time as a Chicago police officer, Huberman attended night classes at the University of Chicago and earned two advanced degrees in 2000, a Master of Social Work from the School of Social Service Administration and a Master of Business Administration from the university's Graduate School of Business (now the Booth School of Business). Huberman was a recipient of The Paul & Daisy Soros Fellowships for New Americans and an Albert Schweitzer Fellow while attending the University of Chicago.
 Passage 3:Hans Klemm's first light aircraft was the Daimler L15 and the L20 had much in common with it. Both were cantilever monoplanes with twin open, tandem cockpits and engines of very low power. The L20's low wing distinguished it from its predecessor and had the advantage of providing a low centre of gravity and better view during the landing approach as well as better protection for occupants in case of crash landings. The low-set wing also allowed a shorter undercarriage on the L20, which was otherwise like that of the L15 with the wheels independently mounted on pairs of centrally hinged V-struts and with vertical shock absorbing legs to the wing underside. Wheels were sometimes replaced by floats. Intended from the start for serial production, the L20's structure was simplified, with a pentagonal cross-section fuselage lacking the L15's rounded upper and lower surfaces. The fuselage was wooden framed with canvas covering. The overall strength of the structure, which had a safety factor of 12, was emphasised.


Ex Output:
3


Ex Input:
Question: How long was Tim Howard a goalkeeper for Everton? Passage 1:On 31 August 2013, Ki joined Sunderland on a season-long loan with a mid-season re-call option. He scored his first goal for Sunderland on 17 December 2013 in a 2–1 League Cup quarter-final win over Chelsea, cutting inside Ashley Cole then beating goalkeeper Mark Schwarzer with a low shot in the 119th minute for the winning goal. On 26 December, he scored his second for Sunderland in a 1–0 away win over Everton. Everton goalkeeper Tim Howard played a short pass to Leon Osman who was robbed of the ball by Ki. Howard brought Ki down and was sent off, and Ki converted the penalty kick himself to give the Black Cats a vital win. It was Ki's first league goal. Ki's third goal for Sunderland came in a 4–1 away win at Fulham from a well-worked set piece by Adam Johnson.
 Passage 2:Yamaguchi was born in Takasaki on January 29, 1969. After graduating from Tokai University, he joined All Nippon Airways (later Yokohama Flügels) in 1991. The club won 1993 Emperor's Cup their first time in major title. In Asia, the club also won 1994–95 Asian Cup Winners' Cup. In 1998, the club won Emperor's Cup. However the club was disbanded end of 1998 season due to financial strain, he moved to Nagoya Grampus Eight with Seigo Narazaki in 1999. The club won 1999 Emperor's Cup. He moved to J2 League club Albirex Niigata in 2003. The club won the champions in 2003 and was promoted to J1 League. In August 2005, he moved to J2 League club Yokohama FC was founded by Yokohama Flügels supporters. The club won the champions in 2006 and was promoted to J1 League. He retired end of 2007 season. He also served as captain in all teams.
 Passage 3:Its first broadcast was the 1970 Daytona 500. The network broadcasts coverage of the NASCAR Cup Series and Xfinity Series races at tracks owned by ISC as well as Dover International Speedway and Pocono Raceway. It also has exclusive coverage of the entire Gander RV & Outdoors Truck Series schedule. Other NCS and NXS races are held at tracks owned by Speedway Motorsports, Inc. and the Indianapolis Motor Speedway. Both SMI and IMS have their own radio networks (Performance Racing Network and the IMS Radio Network), unrelated except for the appearance of Doug Rice on IndyCar Radio during coverage of the Brickyard 400. The NASCAR All-Star Open qualifying race and NASCAR All-Star Race are also broadcast on MRN, despite being held at Charlotte Motor Speedway, the headquarters of SMI. Many stations have affiliations with both MRN and PRN in order to air a full NASCAR schedule.


Ex Output:
1


Ex Input:
Question: In what country is Rynek Glowny located in? Passage 1:Medieval Kraków was surrounded by a 1.9 mile (3 km) defensive wall complete with 46 towers and seven main entrances leading through them. The fortifications around the Old Town were erected over the course of two centuries. The current architectural plan of Stare Miasto—the 13th-century merchants' town—was drawn up following the Tatar invasions of 1259 and 1287. It features the centrally located Rynek Główny, or Main Square, the largest medieval town square of any European city. There is a number of historic landmarks in its vicinity, such as St. Mary's Basilica (Kościół Mariacki), Church of St. Wojciech (St. Adalbert's), Church of St. Barbara, as well as other national treasures. At the center of the plaza, surrounded by kamienice (row houses) and noble residences, stands the Renaissance cloth hall Sukiennice (currently housing gift shops, restaurants and merchant stalls) with the National Gallery of Art upstairs. It is flanked by the Town Hall Tower (Wieża ratuszowa).
 Passage 2:By 1196 Hugh de Say, grandson of Hugh FitzOsbern, had transferred lordship of the manor of Souldern to his brother-in-law Thomas de Arderne. By 1279 the Ardernes were mesne lords, collecting rent from the de Lewknor family. By 1307 the de Lewknors had conveyed Souldern to the Abberbury family of Donnington, Berkshire. Sir Richard Abberbury, knight of the shire for Oxfordshire in 1373 and 1387, granted lands at Souldern to both Donnington Hospital and a house of Crutched Friars at Donnington. Sir Richard's nephew, another Richard Abberbury, inherited the remainder. The younger Richard seized the Crutched Friars' land at Souldern and granted it to William de la Pole, 1st Duke of Suffolk in 1448. The remainder of Richard's land at Souldern passed to his nephew Sir Richard Arches (d.1417), MP for Buckinghamshire in 1402, of Eythrope, Cranwell (both in the parish of Waddesdon) and Little Kimble, Buckinghamshire. Souldern was inherited by his daughter Joan Arches and her husband Sir John Dynham. When their son, John Dynham, 1st Baron Dynham, died in 1501, Souldern manor was divided into four parts which remained in separate hands until the 1590s.
 Passage 3:Maachi began his career as a youth player at Utrecht. He made his first team debut during the 2005–06 season and spent the following year on loan with Dordrecht. He joined Cambuur in 2008 and spent three seasons with the club before being transferred to Zwolle, initially on loan and then permanently during the summer of 2011. In summer 2012, Maachi joined technical director Kevin Hofland at Cypriot side AEK Larnaca. After an unsuccessful stint in Albania, Maachi moved to Birkirkara in January 2015. In the next two years he played in Cyprus for Pafos FC and Nea Salamina. On 18 June 2016, the newly promoted to Greek Super League club Apollon Smyrni officially announced the signing of the experienced Dutch-Moroccan forward on a free transfer. At the end of August 2018, Maachi joined VV DOVO which competes in the Derde Divisie. At the end of 2018 he left there again to return to Cyprus.


Ex Output:
1