Answer the following question: Information: - A heritage railway is a railway kept to carry living history rail traffic in order to re-create or preserve railway scenes of the past. Often heritage railways are old railway lines preserved in a state which depicts a certain period, or periods, in the history of railway systems. - 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. - Bodmin Moor is a granite moorland in northeastern Cornwall, England. It is in size, and dates from the Carboniferous period of geological history. It includes Brown Willy, the highest point in Cornwall, and Rough Tor, a slightly lower peak. Many of Cornwall's rivers have their sources here. It has been inhabited since at least the Neolithic era, when primitive farmers started clearing trees and farming the land. They left their megalithic monuments, hut circles and cairns, and the Bronze Age culture that followed left further cairns, and more stone circles and stone rows. By medieval and modern times, nearly all the forest was gone and livestock rearing predominated. - 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. - Living History is a 2003 memoir by Hillary Rodham Clinton at which time she was a sitting Senator from New York. - Bodmin is a civil parish and major town in Cornwall, England, United Kingdom. It is situated south-west of Bodmin Moor. - Bodmin Parkway railway station is a station on the Cornish Main Line that serves the nearby town of Bodmin and other parts of mid-Cornwall. It is situated south of the town of Bodmin in the civil parish of St Winnow, west of . - The Bodmin & Wenford Railway ( BWR ) is a heritage railway , based at Bodmin in Cornwall , England , United Kingdom . It has an interchange with the national rail network at Bodmin Parkway railway station , the southern terminus of the line . - 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. Given the information above, choose from the list below the object entity that exhibits the relation 'instance of' with the subject 'bodmin and wenford railway'. Choices: - administrative centre - age - bridge - channel - civil parish - cornwall - county - culture - england - forest - government - heritage railway - history - line - local government - memoir - moorland - parish - parkway - period - railway line - size - state - station - town - unitary authority
Answer:
railway line