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.

Example Input: Question: How old as Patsy Palmer the year that Craig Fairbrass first appeared on EastEnders? Passage 1:Dan Sullivan is a fictional character from the BBC soap opera EastEnders, played by Craig Fairbrass. Dan appeared on the show as a regular from 7 June 1999 to 10 July 2000 before returning as one of the show's primary antagonists from 26 February to 16 August 2001. He became central to a storyline involving a love triangle between himself, his lover Carol Jackson (Lindsey Coulson), and her daughter Bianca (Patsy Palmer) — whom Dan embarks on an affair with. Soon afterwards, the character developed an intense feud with local hardman Phil Mitchell (Steve McFadden); the pair started out as best-friends, but ended up becoming archenemies after Phil conned Dan's ownership of The Queen Victoria public house. During the course of their escalating rivalry, Dan become a prime suspect in Phil's shooting after the latter gets shot on the night their ex-lover Mel Healy (Tamzin Outhwaite) married Dan and Phil's fellow nemesis Steve Owen (Martin Kemp). Although Mel's best-friend and Phil's ex-girlfriend Lisa Shaw (Lucy Benjamin) was revealed to be the shooter, Phil ended up framing Dan for the crime - which leads to Dan being wrongfully imprisoned prior to his trial in mid-summer 2001; the trial culminated with Dan being found not guilty, and the character then departed the show after kidnapping Mel and holding her ransom to get revenge on Phil and Steve for conspiring to get him sent down.
 Passage 2:Fred Trump was one of the biggest real estate developers in New York. Using their inheritance, Fred and his mother Elizabeth founded E. Trump & Son. Fred married Mary MacLeod (1912–2000), a native of Tong, a small village near Stornoway, in the Western Isles of Scotland. She was the daughter of fisherman Malcolm MacLeod and Mary MacLeod (née Smith). At age 17, she immigrated to the United States and started working as a maid in New York. Fred and Mary met in New York and married in 1936, settling together in Queens. Mary became a U.S. citizen in 1942. Fred was the father of the businessman Donald Trump, who became president of the real estate company in 1971, and renamed it the Trump Organization. Donald Trump has said that he is "proud" of his German heritage, having served as grand marshal of the 1999 German-American Steuben Parade in New York City. While walking through the city and seeing Trump Tower, Donald Trump recalled saying: "This is a long way from Kallstadt."
 Passage 3:Selling studied mathematics at the Universities of Göttingen and Munich (under Philipp Ludwig von Seidel). He obtained the doctorate in Munich in 1859, under the supervision of Bernhard Riemann. On recommendation of Leopold Kronecker he became professor extraordinarius of mathematics at the University of Würzburg in 1860 – against the will of the philosophical faculty and the mathematics professor Aloys Mayr. There, he also taught astronomy and became conservator-restorer at the astronomical department in 1879. In 1873 he wrote an important paper on binary and ternary quadratic forms which was also translated into French and cited by Henri Poincaré, Émile Picard and Paul Gustav Heinrich Bachmann. Beginning with 1877 he also became concerned with insurance, and participated in the reorganization of the pensions in Bavaria on behalf of the Bavarian government. His application for a promotion to professor ordinarius was declined in 1891. In 1906 he became emeritus.

Example Output: 1

Example Input: Question: How long after the Battle of Princeton did the war during which Fort Mercer was built end? Passage 1:The Calgary Flames selected him in the eighth round, 182nd overall at the 1981 NHL Entry Draft, and he began his professional career in 1983–84 with a 30-point season for the Colorado Flames of the Central Hockey League (CHL). He then spent the majority of three seasons in the American Hockey League (AHL) with the Moncton Golden Flames. He was named to the AHL second All-Star Team in 1984–85, and served as captain of the Golden Flames in 1985–86. DeGray appeared in one NHL game that season, making his NHL debut with Calgary on March 6, 1986, against the New York Rangers. He played a part-time role in Calgary in 1986–87; in 27 games with the Flames, DeGray scored six goals and seven assists.
 Passage 2:Mušicki was stationed in Slavonski Brod at the time of the Axis invasion of Yugoslavia in April 1941 and served as the Royal Yugoslav Army commander responsible for the railroad between Belgrade and Zagreb in the rank of colonel. He demonstrated his support for the Germans by helping their forces during the invasion. Yugoslavia was quickly conquered by the Axis powers and Mušicki remained in Slavonski Brod for several months after the conquest. He attempted to join the Ustaše Militia there, but was rejected. He went to Belgrade in mid-August, where he was received by Zbor leader Dimitrije Ljotić. On 6 October, Milan Nedić, the Prime Minister of the Axis-installed puppet Government of National Salvation, appointed Mušicki to lead the Serbian Volunteer Command (, SDK). Mušicki was involved in executing Serb civilians in the town of Čačak in December 1941. He and Milan Aćimović contacted Chetnik leader Draža Mihailović on 5 December, possibly in an effort to warn him in advance of the assault the Germans had planned, codenamed Operation Mihailovic. This action prompted the Germans to question Mušicki's loyalty. He was removed from command at the end of 1941 and imprisoned by the Germans, but was later freed at Nedić's intervention.
 Passage 3:Fort Mercer was a fort on the Delaware River in New Jersey constructed by the Continental Army during the American Revolutionary War. Built by Polish engineer Thaddeus Kosciuszko under the command of George Washington, Fort Mercer was built in 1777 to block the approach to Philadelphia, Pennsylvania in concert with Fort Mifflin on the Pennsylvania side. Fort Mercer was located in an area called Red Bank, in what is now the borough of National Park, Gloucester County, New Jersey. The fort was named in honor of Brigadier General Hugh Mercer who had died earlier that year at the Battle of Princeton. The fort's site is now part of Red Bank Battlefield Historical Park, which includes a monument and museum. Several cannons attributed to British warships lost supporting the attack on the fort, and others found buried at the fort itself, are in the park.

Example Output: 3

Example Input: Question: Which of the two medical journals mentioned publishes new issues more frequently? Passage 1:"Marry the Night" is a dance-pop and synthpop song with electro rock and house influences. The song starts out with electronic church bells and Gaga softly singing "I'm gonna marry the night/I won't give up on my life/I'm a warrior queen/Live passionately tonight." Soon the beat changes into a dance one, accompanied with techno beats, handclaps and funk music, and moves to the chorus, where Gaga stutters the line "Ma-ma-ma-marry/Ma-ma-ma-marry/Ma-ma-ma-marry the night". It was compared by Tim Jonze from The Guardian to the Eurodance song, "It's My Life" by Dr Alban, while Nicola James from MTV compared the chorus with Jennifer Lopez's 1999 single "Waiting for Tonight. In a pre-release review of certain album tracks, Peter Robinson from the NME blog wrote that Gaga channels "Whitney Houston-esque pop euphoria" into the song, notably that from the singer's musical peak.
 Passage 2:In the 1967 close season, Book was named captain following the transfer of previous captain Johnny Crossan to Middlesbrough, and was henceforth nicknamed Skip by his teammates. His first season as captain was a very successful one, leading Manchester City to their second league championship and playing every game. An Achilles injury sidelined Book for the first four months of the 1968–69 season, but he returned to the team in time for the start of their FA Cup run. In the week preceding the cup final, Book was named the 1969 Football Writers' Association Footballer of the Year Award, sharing the accolade with Dave Mackay. The following Saturday Manchester City played Leicester in the FA Cup final. Manchester City won 1–0, and captain Book lifted the trophy. The following season City became the first English team to win a European and domestic trophy in the same season, the European Cup Winners' Cup and the League Cup. Book retired from playing in 1974, passing the captaincy to Colin Bell. He made 242 football league appearances for the club, and for many years was City's most successful captain in terms of trophies won.
 Passage 3:Multi-dose versions of the vaccine contain the preservative thiomersal (also known as thimerosal), a mercury compound that prevents contamination when the vial is used repeatedly. Single-dose versions and the live vaccine do not contain this preservative. In the U.S., one dose from a multi-dose vial contains approximately 25 micrograms of mercury, a bit less than a typical tuna fish sandwich. In Canada, different variants contain five and 50 micrograms of thimerosal per dose. The use of thiomersal has been controversial, with claims that it can cause autism and other developmental disorders. The U.S. Institute of Medicine examined these claims and concluded in 2004 that the evidence did not support any link between vaccines and autism. Other reviews came to similar conclusions, with a 2006 review in the Canadian Journal of Neurological Sciences stating that there is no convincing evidence to support the claim that thimerosal has a causal role in autism, and a 2009 review in the journal Clinical Infectious Diseases stating that claims that mercury can cause autism are "biologically implausible". The U.K. National Health Service stated in 2003 that "There is no evidence of long-term adverse effects due to the exposure levels of thiomersal in vaccines." The World Health Organization concluded that there is "no evidence of toxicity in infants, children or adults exposed to thiomersal in vaccines". Indeed, in 2008 a review noted that even though thiomersal was removed from all US childhood vaccines in 2001, this has not changed the number of autism diagnoses, which are still increasing.

Example Output:
3