About: http://webisa.webdatacommons.org/276861195

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The walls have been mostly destroyed; but portions are kept in repair by private owners; and these consist of stone and Roman brick, with a strong cement, and are usually from 7 to 8 feet thick.
http://www.w3.org/ns/prov#wasQuotedFrom	visionofbritain.org.uk