About: http://webisa.webdatacommons.org/179572715

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	During medieval times, enemy armies would surround castles or other fortresses and cut off food and water supplies.
http://www.w3.org/ns/prov#wasQuotedFrom	eetimes.com