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 of the organizations that are represented on  YBF's advisory board has the highest membership numbers?  Passage 1:As of September 2010, YBF's "advisory board" includes Matthew Elliott, founder of the UK TaxPayers' Alliance, and representatives of the Heritage Foundation (a US conservative thinktank), US Competitive Enterprise Institute and American Conservative Union (a US conservative lobbying organisation). It also includes the founder of the US Leadership Institute, the President of the US Jesse Helms Center, the President of the Young America's Foundation, the co-founder of the US Henry Jackson Society and a former Executive Director of the Collegiate Network. British representatives include Professor Patrick Minford, blogger Iain Dale (who resigned in the same year) and two local councillors. Liam Fox, the shadow defence secretary, was a member of the YBF's parliamentary council. Conor Burns was until shortly before becoming an MP in 2010 the vice-president of YBF.
 Passage 2:In the course of the French occupation of the lands on the Rhine’s left bank in the wake of the Treaty of Lunéville, Rhaunen was grouped into the Department of Sarre, the arrondissement of Birkenfeld and the canton of Rhaunen. After the French withdrew in 1814, Rhaunen found itself in Prussia’s new Rhine Province, also becoming the seat of a Bürgermeisterei (“mayoralty”) in the Bernkastel-Kues district. Parts of the old high court district, however – Bundenbach, for instance – now belonged to the Principality of Birkenfeld, an exclave of the Grand Duchy of Oldenburg, most of whose territory was in what is now northwest Germany, with a coastline on the North Sea. Even after the First World War, through the Weimar Republic and on through the time of the Third Reich, Rhaunen was the administrative seat for the surrounding villages. In the course of administrative restructuring in the 1960s, the Amt of Rhaunen became the Verbandsgemeinde of Rhaunen in the Birkenfeld district. This arrangement still stands.
 Passage 3:Laskov joined the Haganah as a teenager, and served in various units, including Orde Wingate's Special Night Squads. He also served as a personal messenger for Yaakov Dori, who would later become the first Chief of Staff. In 1940, Laskov joined the British Army so that he could participate in World War II. He served in various capacities, and was a commander of the Jewish Brigade which saw action on the Italian front, eventually reaching the rank of major. After the war, he remained in Europe to participate in the Aliyah Bet illegal immigration effort to bring refugee Jews to Palestine. He also took part in various illicit acts of vengeance against the Nazis and their collaborators. Upon eventually returning to Palestine, he rejoined the Haganah, while also working as chief of security for the electric company.

Output:
1