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: Who was the leader of Somalia's National Security Agency? Passage 1:Barton Stone Alexander (September 4, 1819 – December 15, 1878) was a Union Army lieutenant colonel, engineer regiment commander and chief engineer for the defenses of Washington during the American Civil War. In recognition of his service, in 1866, he was appointed to the brevet rank of brigadier general in the regular army, to rank from March 13, 1865. He was a graduate of the U.S. Military Academy at West Point and served in the United States Army's Corps of Topographical Engineers, which at times was both a part of and separate from the United States Army Corps of Engineers. After graduating from West Point as a second lieutenant in the Class of 1842, he served in the Mexican–American War, building fortifications to protect American supply lines in the advance on Mexico City. After the end of the war, he was stationed in Washington, D.C., where he served as architect for the Scott Building and Quarters Buildings at the U.S. Soldiers' Home and took over the completion of the Smithsonian Institution Building after dissatisfaction with the pace of the first architect caused him to be dismissed.
 Passage 2:Mohammed and a Kenyan extremist, thought to be Musa Hussein (a.k.a. Musa Sambayo), were driving in a car carrying $40,000 in United States dollars, as well as medicine, telephones, laptops and a South African passport in the Afgooye corridor, northwest of Mogadishu on 7 June 2011. Musa Hussein was known to Mohammed as Abdullahi Dere and is believed to have been involved in funding operations for al-Shabaab. At around 11:15 p.m., the car was stopped at a security checkpoint managed by the Somalian military (SNA) in the Sarkuusta area, in southwest Mogadishu. Captain Hassan Mohamed Abukar ordered the driver to switch on the light inside the car. The driver followed the order but switched the light on and off too quickly for the soldiers to identify the people in the car, then one of the occupants opened fire. An order was given to open fire on the car. Two occupants in the car were killed and buried in Mogadishu within 24 hours. A third occupant escaped. Somalia’s National Security Agency suspected one of the dead to be Fazul after examination of the belongings; DNA tests subsequently confirmed his identity. Documents found on his body indicated he was planning a number of attacks in Britain, one of which targeted the notable Eton College.
 Passage 3:G.W. Scott and Sons opened their first store in London, England, in 1661. Due to fire damage sustained during the Great Fire of London, they were forced to relocated their company to first Old Compton Street and then Charing Cross Road, in the central part of the city. The company is likely most well known as having developed the modern form of the picnic basket, which was unveiled in 1851 during the "Great Exhibition of the Works of Industry of All Nations" held in Crystal Palace of Hyde Park, London, the first of many world fair exhibitions during the Victorian Era. They also achieved a measure of international fame when G.W. Scott and Sons created 30 foot tall sculptures decorating the mall parade route for the coronation of Queen Elizabeth II, in addition to making the cradles used by the monarchy. Besides making specialty items for the British Royal Family and their residences (including silver baskets for Buckingham Palace), the company was also contracted by the government during the Second World War to make campaign trunks and furniture for the Army, and double hampers for parachute drops by the Airborne Division of the Royal Air Force.

Output:
2