Instructions: 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: Question: How large was the GDP of Belfast the year Connolly station services were extended to that city? Passage 1:Frazier attended Oconee County High School in Watkinsville, Georgia, graduating in 2010. While playing for the school's baseball team, Frazier recorded 53 doubles, the second most in the history of the Georgia High School Association. Frazier enrolled at Mississippi State University to play college baseball for the Mississippi State Bulldogs. He played sparingly as a freshman. In 2012, his sophomore year, Frazier set a Mississippi State record for assists in a season (227) and was named the most valuable player of the Southeastern Conference (SEC) Baseball Tournament, and was chosen for the United States national collegiate baseball team. In 2013, his junior season, he led the National Collegiate Athletic Association with 107 hits, which set a Bulldogs single-season record, while also setting school records for assists (240) and putouts (120) in a season, and putouts over a career (375). He was named to the SEC All-Tournament Team.
 Passage 2:Metro-Goldwyn-Mayer (MGM) originally announced a remake of the 1925 silent film Ben-Hur in December 1952, ostensibly as a way to spend its Italian assets. Stewart Granger and Robert Taylor were reported to be in the running for the lead. Nine months later, MGM announced it would make the film in CinemaScope, with shooting beginning in 1954. In November 1953, MGM announced it had assigned producer Sam Zimbalist to the picture and hired screenwriter Karl Tunberg to write it. Zimbalist was chosen because he had produced MGM's Best Picture-nominated Christians-and-lions epic Quo Vadis in 1951. The studio then announced in July 1954 that production would start in March 1955 with 42 speaking parts and 97 sets. MGM said Sidney Franklin would direct, that the script by Tunberg was finished, that shooting would occur in Rome and in Spain, and that Marlon Brando was up for the lead. In September 1955, Zimbalist, who continued to claim that Tunberg's script was complete, announced that a $7 million, six-to-seven month production would begin in April 1956 in either Israel or Egypt in MGM's new 65mm widescreen process. MGM, however, suspended production in early 1956.
 Passage 3:The station opened on 29 November 1844 by the Dublin and Drogheda Railway Company as Dublin Station, but was renamed Amiens Street Station ten years later after the street on which it is located. Originally the station served only a single mainline to Drogheda, and in 1853 through services to Belfast commenced. In 1891, the City of Dublin Junction Railway connected the station with Westland Row Station (now Pearse Station) on the city's South side. The City of Dublin Junction had a separate station known as Amiens Street Junction consisting of the present platforms 5, 6, and 7 (currently used by DART, Commuter and Rosslare services) with a separate street entrance. After the amalgamation of the GNR (I) at the end of the 1950s, this station became part of Amiens Street and the separate entrance fell into disuse. The City of Dublin Junction Railway allowed services to run from Amiens Street through to Westland Row to Rosslare and the South East. Services to Sligo were transferred to Westland Row (Pearse Station) running non-stop through the station in 1937, with the closure of Broadstone Station by CIÉ (see also MGWR). Services to Galway and Mayo also terminated at Westland Row, operating through Connolly Station after 1937, running via Mullingar and Athlone. This was discontinued in the 1970s in favour of running services from Heuston Station. Sunday trains to Cork, Limerick and Waterford during the 1960s operated from Connolly platforms 5, 6 and 7 through the Phoenix Park Tunnel, so as to avoid the cost of opening Heuston for the limited Sunday traffic demand at that time.

Output:
3