Information:  - The United States Merchant Marine refers to either United States civilian mariners, or to U.S. civilian and federally owned merchant vessels. Both the civilian mariners, and the merchant vessels, are managed by a combination of the government and private sectors, and engage in commerce or transportation of goods and services in and out of the navigable waters of the United States. The Merchant Marine primarily transports cargo and passengers during peacetime; in times of war, the Merchant Marine can be an auxiliary to the United States Navy, and can be called upon to deliver military personnel and materiel for the military. Merchant Marine officers may also be commissioned as military officers by the Department of Defense. This is commonly achieved by commissioning unlimited tonnage Merchant Marine officers as Strategic Sealift Officers in the Naval Reserves.  - Detroit is the most populous city in the U.S. state of Michigan, the fourth-largest city in the Midwest and the largest city on the United StatesCanada border. It is the seat of Wayne County, the most populous county in the state.  - SS City of Flint , a Hog Islander freighter built by American International Shipbuilding at the Hog Island Shipyard , Philadelphia for the United States Shipping Board ( USSB ) , Emergency Fleet Corporation . City of Flint was named to honor the citizens of Flint , Michigan for their effort in Liberty Loan drives during World War I. The ship was operating with the American Hampton Roads Line in 1930 , but reverted to the USSB by 1935 . By 1940 the USSB had been replaced by the United States Maritime Commission as owner and the ship was being operated as a Maritime Commission cargo vessel . During the World War II City of Flint was being operated by United States Lines allocated to Army cargo requirements . City of Flint was the first American ship captured by the Germans during World War II.  - Hog Islanders is the slang for ships built to Emergency Fleet Corporation designs number 1022 and 1024. These vessels were cargo and transport ships, respectively, built under government direction and subsidy to address a shortage of ships in the United States Merchant Marine during World War I.  - Michigan is a state in the Great Lakes and Midwestern regions of the United States. The name Michigan is the French form of the Ojibwa word "mishigamaa", meaning "large water" or "large lake". Michigan is the tenth most populous of the 50 United States, with the 11th most extensive total area (the largest state by total area east of the Mississippi River). Its capital is Lansing, and its largest city is Detroit.  - Flint is the largest city and county seat of Genesee County, Michigan. Located along the Flint River, northwest of Detroit, it is a principal city within the region known as "Mid Michigan". According to the 2010 census, Flint has a population of 102,434, making it the seventh largest city in Michigan. The Flint metropolitan area is located entirely within Genesee County. It is the fourth largest metropolitan area in Michigan with a population of 425,790 in 2010. The city was incorporated in 1855.  - World War I (WWI or WW1), also known as the First World War, or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history. Over nine million combatants and seven million civilians died as a result of the war (including the victims of a number of genocides), a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and the tactical stalemate caused by gruelling trench warfare. It was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved.  - A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is used in the United States, Canada, Romania, China and Taiwan. In the United Kingdom and Ireland, county towns have a similar function.  - In general, a civilian is "a person who is not a member of the military or of a police or firefighting force", as defined by Merriam Webster's Dictionary. From the perspective of the U.S. Department of Defense, Chapter 18 of Title 10 United States Code refers to non-military law enforcement officers as civilians since they are employees rather than enlisted personnel, and also in order to distinguish itself from military police. In military and law enforcement slang, the term "Civies" or "Civvies" are often used to refer civilian population or civilian clothing.    After reading the paragraphs above, we are interested in knowing the entity with which 'ss city of flint ' exhibits the relationship of 'operator'. Find the answer from the choices below.  Choices: - canada  - ireland  - lansing  - refer  - united kingdom  - united states navy
united states navy

Information:  - The twenty-foot equivalent unit (often TEU or teu) is an inexact unit of cargo capacity often used to describe the capacity of container ships and container terminals. It is based on the volume of a intermodal container, a standard-sized metal box which can be easily transferred between different modes of transportation, such as ships, trains and trucks.  - The Port of Hong Kong, located by the South China Sea, is a deepwater seaport dominated by trade in containerised manufactured products, and to a lesser extent raw materials and passengers. A key factor in the economic development of Hong Kong, the natural shelter and deep waters of Victoria Harbour provide ideal conditions for berthing and the handling of all types of vessels. It is one of the busiest ports in the world, in the three categories of shipping movements, cargo handled and passengers carried.  - A container terminal is a facility where cargo containers are transshipped between different transport vehicles, for onward transportation. The transshipment may be between container ships and land vehicles, for example trains or trucks, in which case the terminal is described as a "maritime container terminal". Alternatively the transshipment may be between land vehicles, typically between train and truck, in which case the terminal is described as an "inland container terminal".  - The world's busiest ports are commonly ranked by cargo tonnage and by volume of container shipment measured in TEUs. Since the 2000s, the Port of Shanghai has surpassed the Port of Singapore and the Port of Hong Kong to become the world's busiest port by both measures.  - The Port of Rotterdam is the largest port in Europe , located in the city of Rotterdam , Netherlands . From 1962 until 2004 it was the world 's busiest port , now overtaken first by Singapore and then Shanghai . In 2011 , Rotterdam was the world 's eleventh - largest container port in terms of twenty - foot equivalent units ( TEU ) handled ( 2009 : tenth ; 2008 : ninth , 2006 : sixth ) . In 2012 Rotterdam was the world 's sixth - largest port in terms of annual cargo tonnage . Covering 105 square kilometres ( 41 sq mi ) , the port of Rotterdam now stretches over a distance of 40 kilometres ( 25 mi ) . It consists of the city centre 's historic harbor area , including Delfshaven ; the Maashaven / Rijnhaven / Feijenoord complex ; the harbours around Nieuw - Mathenesse ; Waalhaven ; Vondelingenplaat ; Eemhaven ; Botlek ; Europoort , situated along the Calandkanaal , Nieuwe Waterweg and Scheur ( the latter two being continuations of the Nieuwe Maas ) ; and the reclaimed Maasvlakte area , which projects into the North Sea . Rotterdam consists of five distinct port areas and three distribution parks that facilitate the needs of a hinterland with 40,000,000 consumers .    After reading the paragraphs above, we are interested in knowing the entity with which 'port of rotterdam' exhibits the relationship of 'has facility'. Find the answer from the choices below.  Choices: - container terminal  - key
container terminal