Given the task definition and input, reply with output. 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: What is the population of the municipality where the USS St Louis was built in 1861? Passage 1:He was drafted by the Oakland Raiders in 1999 and was later signed by the Cincinnati Bengals in December 1999. Armour started for the Bengals in 2001 and 2002 and was released by them in August 2003. In June 2004 Armour was signed as a free agent by the British Columbia Lions and played for them in 2004 and 2005. After the 2005 season Armour was signed by the Hamilton Tiger-Cats and played for them in the 2006 and 2007 seasons. In February 2008 he was signed by the Calgary Stampeders. He helped Calgary win the 2008 Grey Cup. He was later released on June 22, 2009 for overaggressive plays during training camp. On August 3, 2009, the BC Lions re-signed Armour. On February 25, 2010, Armour announced his retirement after six seasons in the CFL, having spent three with the BC Lions.
 Passage 2:The USS Essex had been constructed in 1856. She was a 1000-ton river gunboat, converted from her original role as a timberclad ferry named New Era. She was armed with one 32-pounder cannon, three Dahlgren smooth bores, one Dahlgren smoothbore and a 12-pounder howitzer. The USS St Louis was a City class ironclad built in 1861 at Carondelet, Missouri. She was armed with three 8-inch smoothbores, four 42-pounder rifles, six 32-pounder rifles and one 12-pounder rifle at the time of her service at Lucas Bend. Both ships were sent to Cairo, Illinois, early in the Civil War as part of troop transports moving the army into Tennessee. Illinois, a Union state which contributed 250,000 men to the Union Army, a figure surpassed by only New York, Pennsylvania, and Ohio, was a key theater. Cairo, at the confluence between the Mississippi and Ohio rivers, was a key supply point and headquarters for Flag Officer Andrew Hull Foote and General Ulysses S. Grant. It was defended by Fort Defiance. The complex river network provided routes for the Union gunboats into the heart of the Confederate forces; however the water levels – particularly in the Tennessee River – were often not sufficient for gunboats to pass.
 Passage 3:Ruben is known for hosting the show Outrageous Acts of Science on the Science Channel, known outside the United States as You Have Been Warned and Loco Lab. He has also been seen and heard on the Food Network's Food Detectives, the Science Channel's Head Rush, the Weather Channel's Weather Gone Viral, the Travel Channel's Mysteries at the Kremlin, Discovery International's Superhuman Science, the Science Channel's How Do They Do It?, the documentary Mortified Nation, and NPR's All Things Considered and The Moth Radio Hour. He is the author of Surviving Your Stupid, Stupid Decision to Go to Grad School (Random House, 2010), a satirical guide to post-baccalaureate education, and Pinball Wizards: Jackpots, Drains, and the Cult of the Silver Ball (Chicago Review Press, 2017), a narrative nonfiction book about the past, present, and future of pinball. Ruben is also known for writing the monthly science humor column "Experimental Error" in the AAAS journal Science Careers. Ruben frequently gives keynote lectures and performances about science, education, career-related topics, comedy, science communication, public perception of science, and performs his one-man show about bullying, Please Don't Beat Me Up: Stories and Artifacts from Adolescence.
2