Definition: 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: Which Canadian sport has the most participants? Passage 1:This extended training period meant that he had accumulated 138 flying hours in his pilot's logbook before he finally joined No. 66 Squadron RFC in Italy on 10 March 1918. He was assigned to "C" Flight, flying a Sopwith Camel single seat fighter, and became the preferred wingman of fellow Canadian ace Billy Barker. Birks' first aerial victory came on 18 March, when he destroyed a Rumpler reconnaissance aircraft over Pravisdomini, killing an Austro-Hungarian pilot named Shneeberger. Six days later, he set another reconnaissance aircraft on fire, killing the crew of Poelzi and Suski. His third victory would not come until 2 May, when he wounded Leutnant K. Kosiuski and drove him into a crash landing that destroyed his Albatros D.V. Two days later, Birks shot down and killed ace Oberleutnant Karl Patzelt, as well as F. Frisch. In addition to killing both Austro-Hungarian pilots, he destroyed both their Albatros D.Vs; they were credited as "captured" because they fell within Italian lines. The new ace shot down another D.V in flames a week later, on 11 May. He destroyed two Berg fighters in five minutes on a morning patrol on 19 May. The following day, he destroyed another. On 24 May, while flying with Barker, Birks was credited with shooting down Hungarian ace József Kiss of Flik 55J; Birks thus became a double ace. On 9 June Birks set another Albatros D.V on fire in mid-air. On the 21st, he capped his list of triumphs by destroying another D.V over Motta. Most unusually for a British pilot, he had no "soft" victories, such as "driven down out of control".
 Passage 2:In 1658 Hungerford was elected Member of Parliament for Chippenham in the Third Protectorate Parliament. He was elected MP for Chippenham in 1660 for the Convention Parliament. He was made a Knight of the Bath at the coronation of King Charles II on 23 April 1661. In 1661 he was elected for Chippenham again in the Cavalier Parliament but the election was declared void. He was then re-elected in the by-election later in 1661 and also in the two elections in 1679. In January 1680 he presented a petition for the summoning of a parliament, and his avowed opposition to the court party of King Charles II led to his removal as Lord Lieutenant of his county in May 1681. He settled in Spring Gardens, Whitehall, in 1681 and was elected MP for Chippenham again in the Oxford Parliament of 1681. He was implicated in the 1683 Rye House Plot and his home at Farleigh Castle was searched for arms. He was elected MP for New Shoreham in 1685, 1688, and 1690, and for Steyning in 1695, 1698, 1700, and 1702.
 Passage 3:Ice hockey, referred to as simply "hockey", is Canada's most prevalent winter sport, its most popular spectator sport, and its most successful sport in international competition. Lacrosse, a sport with Indigenous origins, is Canada's oldest sport. Canadian football is Canada's second most popular spectator sport, being the most popular in the prairie provinces. The Canadian Football League's annual championship, the Grey Cup, is one of the country's largest annual sports events. While other sports have a larger spectator base, Association football, known in Canada as soccer in both English and French, has the most registered players of any team sport in Canada. Professional teams exist in many cities in Canada. Statistics Canada reports that the top ten sports that Canadians participate in are golf, ice hockey, swimming, soccer, basketball, baseball, volleyball, skiing (downhill and alpine), cycling and tennis.

Output:
3