Given the question: Information: - A steam engine is a heat engine that performs mechanical work using steam as its working fluid. - The United States of America has seven federal uniformed services that commission officers as defined by Title 10, and subsequently structured and organized by Title 10, Title 14, Title 32 and Title 42 of the United States Code. - The first USS Marmora was a stern wheel paddle steamer in the United States Navy . Marmora was built at Monongahela , Pennsylvania , in 1862 , was purchased by the Navy at St. Louis , Missouri , on 17 September 1862 from Messrs . Brenan , Nelson , and McDonnell ; and commissioned at Carondelet , Missouri , on 21 October 1862 , Captain Robert Getty in command . - An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. - The United States Armed Forces are the federal armed forces of the United States. They consist of the Army, Marine Corps, Navy, Air Force, and Coast Guard. The President of the United States is the military's overall head, and helps form military policy with the U.S. Department of Defense (DoD), a federal executive department, acting as the principal organ by which military policy is carried out. From the time of its inception, the military played a decisive role in the history of the United States. A sense of national unity and identity was forged as a result of victory in the First Barbary War and the Second Barbary War. Even so, the Founders were suspicious of a permanent military force. It played an important role in the American Civil War, where leading generals on both sides were picked from members of the United States military. Not until the outbreak of World WarII did a large standing army become officially established. The National Security Act of 1947, adopted following World WarII and during the Cold War's onset, created the modern U.S. military framework; the Act merged previously Cabinet-level Department of War and the Department of the Navy into the National Military Establishment (renamed the Department of Defense in 1949), headed by the Secretary of Defense; and created the Department of the Air Force and National Security Council. - A reserve fleet is a collection of naval vessels of all types that are fully equipped for service but are not currently needed, and thus partially or fully decommissioned. A reserve fleet is informally said to be "in mothballs" or "mothballed"; an equivalent expression in unofficial modern U.S. naval usage is "ghost fleet". In earlier times, and especially in British usage, these ships were said to be "laid up in ordinary". - An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Aircraft carriers are expensive to build and are critical assets. Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry numerous fighter planes, strike aircraft, helicopters, and other types of aircraft. - A paddle steamer is a steamship or riverboat powered by a steam engine that drives paddle wheels to propel the craft through the water. - The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest, most capable navy in the world, with the highest combined battle fleet tonnage. The U.S. Navy has the world's largest aircraft carrier fleet, with ten in service, two in the reserve fleet, and three new carriers under construction. The service has 323,792 personnel on active duty and 108,515 in the Navy Reserve. It has 274 deployable combat vessels and more than 3,700 aircraft in active service . - A riverboat is a watercraft designed for inland navigation on lakes, rivers, and artificial waterways. They are generally equipped and outfitted as work boats in one of the carrying trades, for freight or people transport, including luxury units constructed for entertainment enterprises, such as lake or harbour tour boats. As larger water craft, virtually all riverboats are especially designed and constructed, or alternatively, constructed with special-purpose features that optimizes them as riverine or lake service craft, for instance, dredgers, survey boats, fisheries management craft, fireboats and law enforcement patrol craft. - A steamship, often referred to as a steamer, is an ocean faring seaworthy vessel that is propelled by one or more steam engines that typically drive (turn) propellers or paddlewheels. The first steamships came into practical usage during the early 1800s; however, there were exceptions that came before. Steamships usually use the prefix designations of "PS" for "paddle steamer" or "SS" for "screw steamer" (using a propeller or screw). As paddle steamers became less common, "SS" is assumed by many to stand for "steam ship". Ships powered by internal combustion engines use a prefix such as "MV" for "motor vessel", so it is not correct to use "SS" for most modern vessels. - Naval warfare is combat in and on the sea, the ocean, or any other major body of water such as a large lake or wide river. After reading the paragraphs above, we are interested in knowing the entity with which 'uss marmora ' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - acting - air force - airbase - aircraft - aircraft carrier - armed forces - army - body of water - century - coast - code - cold war - collection - combat - corps - engine - entertainment - fighter - fleet - fluid - ghost - lake - machine - military - naval warfare - navy - ocean - organ - paddle - paddle steamer - policy - result - river - riverboat - sea - security - service - seven - ship - steam engine - steamship - strike - ten - three - two - war - warship - watercraft - work - world war
The answer is:
steamship