Please answer the following question: Information:  - Thomas Telford FRS, FRSE (9 August 1757  2 September 1834) was a Scottish civil engineer, architect and stonemason, and a noted road, bridge and canal builder. After establishing himself as an engineer of road and canal projects in Shropshire, he designed numerous infrastructure projects in his native Scotland, as well as harbours and tunnels. Such was his reputation as a prolific designer of highways and related bridges, he was dubbed "The Colossus of Roads" (a pun on the Colossus of Rhodes), and, reflecting his command of all types of civil engineering in the early 19th century, he was elected as the first President of the Institution of Civil Engineers, a post he retained for 14 years until his death.  - Great Britain, also known as Britain , is a large island in the north Atlantic Ocean off the northwest coast of continental Europe. With an area of , Great Britain is the largest European island and the ninth-largest in the world. In 2011 the island had a population of about 61 million people, making it the world's third-most populous island after Java in Indonesia and Honshu in Japan. The island of Ireland is situated to the west of it, and together these islands, along with over 1,000 smaller surrounding islands, comprise the British Isles archipelago.  - Wales is a country that is part of the United Kingdom and the island of Great Britain. It is bordered by England to the east, the Irish Sea to the north and west, and the Bristol Channel to the south. It had a population in 2011 of 3,063,456 and has a total area of . Wales has over of coastline and is largely mountainous, with its higher peaks in the north and central areas, including Snowdon, its highest summit. The country lies within the north temperate zone and has a changeable, maritime climate.  - The Irish Sea (, , , Ulster-Scots: "Airish Sea"), separates the islands of Ireland and Great Britain. It is connected to the Celtic Sea in the south by St George's Channel, and to the Inner Seas off the West Coast of Scotland in the north by the North Channel. Anglesey is the largest island within the Irish Sea, followed by the Isle of Man. The sea is occasionally, but rarely, referred to as the Manx Sea.  - Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.  - An abbey is a complex of buildings used by members of a religious order under the governance of an abbot or abbess. It provides a place for religious activities, work and housing of Christian monks and nuns. The concept of the abbey has developed over many centuries from the early monastic ways of religious men and women where they would live isolated from the lay community about them. Religious life in an abbey may be monastic. An abbey may be the home of an enclosed religious order or may be open to visitors. The layout of the church and associated buildings of an abbey often follows a set plan determined by the founding religious order. Abbeys are often self-sufficient while using any abundance of produce or skill to provide care to the poor and needy, refuge to the persecuted or education to the young. Some abbeys offer accommodation to people who are seeking spiritual retreat. There are many famous abbeys across Europe.  - A tidal island is a piece of land that is connected to the mainland by a natural or man-made causeway that is exposed at low tide and submerged at high tide. Because of the mystique surrounding tidal islands many of them have been sites of religious worship, such as Mont Saint-Michel with its Benedictine Abbey. Tidal islands are also commonly the sites of fortresses because of their natural fortifications.  - Anglesey or Ynys Môn is an island off the north-west coast of Wales. With an area of , Anglesey is by far the largest island of Wales and the fifth-largest island in the British Isles. Anglesey is also the largest island in the Irish Sea by area, and the second most populous island in the Irish Sea (after the Isle of Man). The population at the 2011 census was 69,751. Two bridges span the Menai Strait, connecting the island to the mainland: the Menai Suspension Bridge, designed by Thomas Telford in 1826, and the Britannia Bridge.  - Britannia Bridge is a bridge across the Menai Strait between the island of Anglesey and the mainland of Wales. It was originally designed and built by Robert Stephenson as a tubular bridge of wrought iron rectangular box-section spans for carrying rail traffic. Following a fire in 1970 it was rebuilt, initially as a single tier steel truss arch bridge, carrying rail traffic. A second tier was added later and opened in 1980 to accommodate road traffic.  - The Isle of Man, also known simply as Mann, is a self-governing crown dependency in the Irish Sea between England and Northern Ireland. The head of state is Queen Elizabeth II, who holds the title of Lord of Mann. The Lord of Mann is represented by a Lieutenant Governor. Foreign relations and defence are the responsibility of the British Government.  - Yr Wyddfa commonly known as Snowdon in English, is the highest mountain in Wales, at an elevation of above sea level, and the highest point in the British Isles south of the Scottish Highlands. It is located in Snowdonia National Park (") in Gwynedd, and has been described as "probably the busiest mountain in Britain". It is designated as a national nature reserve for its rare flora and fauna.  - 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.  - Ynys Llanddwyn or Llanddwyn Island is a small tidal island off the west coast of Anglesey , North Wales . The nearest town is Newborough .  - The Menai Strait (the "River Menai") is a narrow stretch of shallow tidal water about long, which separates the island of Anglesey from the mainland of Wales.  - The Angles were one of the main Germanic peoples who settled in Britain in the post-Roman period. They founded several of the kingdoms of Anglo-Saxon England, and their name is the root of the name "England". The name comes from the district of Angeln, an area located on the Baltic shore of what is now Schleswig-Holstein.  - The Menai Suspension Bridge is a suspension bridge to carry road traffic between the island of Anglesey and the mainland of Wales. The bridge was designed by Thomas Telford and completed in 1826 and is a Grade I listed building.  - 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.  - The Bristol Channel is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Severn to the North Atlantic Ocean. It takes its name from the English city of Bristol, and is over 30 miles (50 km) across at its widest point.  - Le Mont-Saint-Michel (Norman: "Mont Saint Miché", ) is an island commune in Normandy, France. It is located about one kilometre off the country's northwestern coast, at the mouth of the Couesnon River near Avranches and is in size. , the island has a population of 44.    After reading the paragraphs above, we are interested in knowing the entity with which 'ynys llanddwyn' exhibits the relationship of 'located on terrain feature'. Find the answer from the choices below.  Choices: - british isles  - celtic sea  - coast  - earth  - england  - english channel  - europe  - france  - great britain  - gwynedd  - ireland  - irish sea  - java  - mainland  - moon  - rhodes  - wales  - western europe
A:
irish sea