About: http://webisa.webdatacommons.org/368432996

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	This method is preferred for another reason - if the underground drainage system becomes blocked, water will spill over the gully, thus giving a visual warning that there is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	buildingconservation.com