Information:  - England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west. The Irish Sea lies northwest of England and the Celtic Sea lies to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain (which lies in the North Atlantic) in its centre and south; and includes over 100 smaller islands such as the Isles of Scilly, and the Isle of Wight.  - The Royal Albert Bridge is a railway bridge which spans the River Tamar in England between Plymouth, Devon and Saltash, Cornwall. Its unique design consists of two lenticular iron trusses above the water, with conventional plate-girder approach spans. This gives it a total length of . It carries the Cornish Main Line railway in and out of Cornwall. It is adjacent to the Tamar Bridge which opened in 1962 to carry the A38 road.  - Plymouth is a city on the south coast of Devon, England, about south-west of Exeter and west-south-west of London, between the mouths of the rivers Plym to the east and Tamar to the west where they join Plymouth Sound to form the boundary with Cornwall.  - The English Channel ("the Sleeve" [hence ] "Sea of Brittany" "British Sea"), also called simply the Channel, is the body of water that separates southern England from northern France, and joins the southern part of the North Sea to the rest of the Atlantic Ocean.  - The Cornish Main Line is a railway line in Cornwall in the United Kingdom. It runs from Penzance to Plymouth, crossing from Cornwall into Devon over the famous Royal Albert Bridge at Saltash.  - Saltash is a town and civil parish in southeast Cornwall, England, UK. It has a population of 14,964, which rose to 16,184 at the 2011 census. It lies in the south east of Cornwall, facing Plymouth over the River Tamar. It was in the Caradon district until March 2009 and is known as "the Gateway to Cornwall". Saltash means "ash tree by the salt mill". Saltash is the largest town within the East Cornwall area and is one of the largest in Cornwall.  - The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union.  - Redruth is a town and civil parish in Cornwall, England, United Kingdom. The population of Redruth was 14,018 at the 2011 census. In the same year the population of the Camborne-Redruth urban area, which also includes Carn Brea, Illogan and several satellite villages, stood at 55,400 making it the largest conurbation in Cornwall. Redruth lies approximately at the junction of the A393 and A3047 roads, on the route of the old London to Land's End trunk road (now the A30), and is approximately west of Truro, east of St Ives, north east of Penzance and north west of Falmouth. Camborne and Redruth together form the largest urban area in Cornwall and before local government reorganisation were an urban district.  - In England, a civil parish is a territorial designation which is the lowest tier of local government below districts and counties, or their combined form, the unitary authority. It is an administrative parish, in contrast to an ecclesiastical parish.  - The Tamar is a river in south west England, that forms most of the border between Devon (to the east) and Cornwall (to the west). The area is a World Heritage Site due to its historic mining activities.  - Penzance is a town, civil parish and port in Cornwall, in England, United Kingdom. It is well known for being the most westerly major town in Cornwall. and is about west of Plymouth and west-southwest of London. Situated in the shelter of Mount's Bay, the town faces south-east onto the English Channel, is bordered to the west by the fishing port of Newlyn, to the north by the civil parish of Madron and to the east by the civil parish of Ludgvan.  - Camborne ('Crooked Hill') is a town and civil parish in west Cornwall, UK. It is at the western edge of a conurbation comprising Camborne, Pool and Redruth.  - Cornwall is a ceremonial county and unitary authority area of England within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of and covers an area of . The administrative centre, and only city in Cornwall, is Truro, although the town of Falmouth has the largest population for a civil parish and the conurbation of Camborne, Pool and Redruth has the highest total population.  - A unitary authority is a type of local authority that has a single tier and is responsible for all local government functions within its area or performs additional functions which elsewhere in the relevant country are usually performed by national government or a higher level of sub-national government.  - Penponds Viaduct is a railway viaduct which carries the Cornish Main Line west of Camborne in Cornwall , England . It crosses over a small valley containing the southern arm of the Red River , and a minor road known as Viaduct Lane . The Hayle Railway opened the railway through this site in 1837 to link Hayle and Redruth . To overcome a significant change in elevation an inclined plane was built to the east of the present viaduct . When the West Cornwall Railway took over the route , it built a timber trestle viaduct as part of a more gently - graded route which by - passed the inclined plane . The present - day viaduct was built by the Great Western Railway in 1888 as part of a programme to replace the timber viaducts on the line and prepare the single - track route for double track . It is built of brick arches on stone piers .  - The Celtic Sea (; ) is the area of the Atlantic Ocean off the south coast of Ireland bounded to the east by Saint George's Channel; other limits include the Bristol Channel, the English Channel, and the Bay of Biscay, as well as adjacent portions of Wales, Cornwall, Devon, and Brittany. The southern and western boundaries are delimited by the continental shelf, which drops away sharply. The Isles of Scilly are an archipelago of small islands in the sea.  - Truro is a city and civil parish in Cornwall, England, United Kingdom. Truro is Cornwall's county town and only city, its centre for administration, leisure and retail and had a population recorded in the 2011 census of 18,766. It is the most southern city in mainland Great Britain. People from Truro are known as Truronians.   - A conurbation is a region comprising a number of cities, large towns, and other urban areas that, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cases, a conurbation is a polycentric urbanised area, in which transportation has developed to link areas to create a single urban labour market or travel to work area.  - Devon (archaically known as Devonshire) is a county of England, reaching from the Bristol Channel in the north to the English Channel in the south. It is part of South West England, bounded by Cornwall to the west, Somerset to the northeast, and Dorset to the east. The City of Exeter is the county town; seven other districts of East Devon, Mid Devon, North Devon, South Hams, Teignbridge, Torridge, and West Devon are under the jurisdiction of Devon County Council; Plymouth and Torbay are each a part of Devon but administered as unitary authorities. Combined as a ceremonial county, Devon's area is and its population is about 1.1 million.    After reading the paragraphs above, we are interested in knowing the entity with which 'penponds viaduct' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - area  - bay  - body of water  - bridge  - channel  - city  - coast  - conurbation  - cornwall  - country  - county  - county town  - design  - england  - fishing port  - five  - government  - hill  - island  - jurisdiction  - leisure  - line  - local authority  - main line  - market  - mining  - number  - parish  - part  - population  - port  - railway bridge  - railway line  - region  - river  - saint  - salt  - sea  - shelter  - single  - sound  - sovereign state  - state  - town  - tree  - union  - unitary authority  - urban area  - water  - year
bridge