Information:  - Norfolk is a county in East Anglia in England. It borders Lincolnshire to the west and north-west, Cambridgeshire to the west and southwest, and Suffolk to the south. Its northern and eastern boundaries are the North Sea and, to the north-west, The Wash. The county town is Norwich.  - The River Yare is a river in the English county of Norfolk. In its lower reaches it is one of the principal navigable waterways of The Broads and connects with the rest of the network.  - A port is a location on a coast or shore containing one or more harbors where ships can dock and transfer people or cargo to or from land. Port locations are selected to optimize access to land and navigable water, for commercial demand, and for shelter from wind and waves. Ports with deeper water are rarer, but can handle larger ships. Since ports throughout history handled every kind of traffic, support and storage facilities vary widely, may extend for miles, and dominate the local economy. Some ports have an important military role.  - In economics, cargo or freight are goods or produce being conveyed  generally for commercial gain  by ship, boat, or aircraft, although the term is now often extended to cover all types of freight, including that carried by train, van, truck, or intermodal container. The term cargo is also used in case of goods in the cold-chain, because the perishable inventory is always in transit towards a final end-use, even when it is held in cold storage or other similar climate-controlled facility.  - Great Yarmouth Outer Harbour is a port constructed on the east coast of England at Great Yarmouth . Construction work on the Outer Harbour began in June 2007 . The harbour which is built in the South Denes area was planned to bring trade to the area . The plans included a container terminal and a passenger ferry terminal , but with no confirmed contracts these were not built .  - Container ships (sometimes spelled containerships) are cargo ships that carry all of their load in truck-size intermodal containers, in a technique called containerization. They are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo.  - A harbor or harbour (see spelling differences), or haven, is a body of water where ships, boats and barges seek shelter from stormy weather, or are stored for future use. Harbors and ports are often confused with each other. A port is a manmade facility built for loading and unloading vessels and dropping off and picking up passengers. Ports are often located "in" harbors.  - 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".  - A train is a form of rail transport consisting of a series of vehicles that usually runs along a rail track to transport cargo or passengers. Motive power is provided by a separate locomotive or individual motors in self-propelled multiple units. Although historically steam propulsion dominated, the most common modern forms are diesel and electric locomotives, the latter supplied by overhead wires or additional rails. Other energy sources include horses, engine or water-driven rope or wire winch, gravity, pneumatics, batteries, and gas turbines. Train tracks usually consist of two running rails, sometimes supplemented by additional rails such as electric conducting rails and rack rails, with a limited number of monorails and maglev guideways in the mix. The word 'train' comes from the Old French "trahiner", from the Latin "trahere" 'pull, draw'.  - A truck (United States, Canada, Australia, New Zealand, Puerto Rico and Pakistan; also called a lorry in the United Kingdom, Ireland, South Africa, Malaysia, Singapore, and India) is a motor vehicle designed to transport cargo. Trucks vary greatly in size, power, and configuration; smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful, and may be configured to mount specialized equipment, such as in the case of fire trucks and concrete mixers and suction excavators.  - Great Yarmouth, often known to locals as Yarmouth, is a coastal town in Norfolk, England. It is located at the mouth of the River Yare, east of Norwich.  - Norwich (also ) is a city on the River Wensum in East Anglia and lies about 100 miles (160 km) north-east of London. It is the regional administrative centre for East Anglia and county town of Norfolk. During the 11th century, Norwich was the largest city in England after London, and one of its most important. It remained the capital of the most populous English county until the Industrial Revolution.    After reading the paragraphs above, we are interested in knowing the entity with which 'great yarmouth outer harbour' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - 100 miles  - boat  - century  - city  - climate  - coast  - container  - container terminal  - county  - county town  - economics  - energy  - engine  - england  - equipment  - facility  - gas  - harbor  - india  - limited  - locomotive  - malaysia  - may  - military  - port  - principal  - river  - role  - series  - shelter  - ship  - size  - town  - track  - train  - transport  - truck  - wind  - wire  - word
Answer:
harbor