You will be given a definition of a task first, then some input of the task.
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.

Question: In what events did Zambia's two swimmers at the 2012 Summer Olympics compete? Passage 1:For superstitious reasons, when the Romans began to intercalate to bring their calendar into line with the solar year, they chose not to place their extra month of Mercedonius after February but within it. February 24—known in the Roman calendar as "the sixth day before the Kalends of March"—was replaced by the first day of this month since it followed Terminalia, the festival of the Roman god of boundaries. After the end of Mercedonius, the rest of the days of February were observed and the new year began with the first day of March. The overlaid religious festivals of February were so complicated that Julius Caesar opted not to change it at all during his 46 calendar reform. The extra day of his system's leap years were located in the same place as the old intercalary month but he opted to ignore it as a date. Instead, the sixth day before the Kalends of March was simply said to last for 48 hours and all the other days continued to bear their original names. (The Roman practice of inclusive counting initially caused the priests in charge of the calendar to add the extra hours every three years instead of every four and Augustus was obliged to omit them for a span of decades until the system was back to where it should have been.) When the extra hours finally began to be reckoned as two separate days instead of a doubled sixth ("bissextile") one, the leap day was still taken to be the one following hard on the February 23 Terminalia. Although February 29 has been popularly understood as the leap day of leap years since the beginning of sequential reckoning of the days of months in the late Middle Ages, in Britain and most other countries, no formal replacement of February 24 as the leap day of the Julian and Gregorian calendars has occurred. The exceptions include Sweden and Finland, who enacted legislation to move the day to February 29. This custom still has some effect around the world, for example with respect to name days in Hungary.
 Passage 2:Woodhouse began his football career at York City's centre of excellence in 1994, before being transferred to Sheffield United for an initial compensation fee of £2,200. Sheffield United and York City later agreed on an additional £15,000 fee plus a five-percentage sell-on clause. He made his debut for Sheffield United at the age of 17, coming on as a 79th-minute substitute in a 1–0 home win against Crewe Alexandra in the First Division on 29 November 1997. He made a total of nine First Division appearances in the 1997–98 season. Woodhouse holds the record for being the club's youngest ever captain, aged 19. He earned a call-up to the England under-21 team, and made his debut in a 2–2 away draw against Hungary on 27 April 1999. He went on to earn another three caps against Sweden, Bulgaria and Poland in England's 2000 European Under-21 Championship qualifying group. He made a total of 104 appearances in the Football League, scoring six goals, before being sold to Birmingham City for £1 million in February 2001.
 Passage 3:The seven athletes that were selected to compete in the London Games were Gerald Phiri in the men's 100 metres, Prince Mumba in the men's 800 metres and Chauzje Choosha in the women's 100 metres. Choosha qualified via a wildcard and replaced long-distance runner Tonny Wamulwa, who withdrew before the opening of the Games because of injuries sustained in a road traffic accident on 9 July. Swimmers Zane Jordan and Jade Ashleigh Howard qualified for the Games via a universality place awarded by FINA as their best times of 59.33 and one minute and 1.24 seconds were not within the standard entry time. Judo Boas Munyonga qualified for the men's 81 kg event after being awarded an additional place in the additional places category for the African continent by the International Judo Federation. Boxer Gilbert Choombe qualified for the men's light welterweight following the conclusion of the AIBA African Olympic Qualifying Event.

Output:
3