About: http://webisa.webdatacommons.org/3532089

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	As said there 'back of an envelope' calculation (NOT 'confident') and nowhere near as comprehensive as someone with your experience could come up with, especially if on the ground and set free to roam...
http://www.w3.org/ns/prov#wasQuotedFrom	estateagenttoday.co.uk