About: http://webisa.webdatacommons.org/292415789

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	In addition to utilizing geographical barriers such as rivers, marshes, or rugged terrain, these measures have historically included fortifications.
http://www.w3.org/ns/prov#wasQuotedFrom	mcgill.ca