About: http://webisa.webdatacommons.org/409457230

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	Whilst this can only ever be a best guess as there is no such thing as an average year, it does give a better indication of reality than published benchmark figures.
http://www.w3.org/ns/prov#wasQuotedFrom	hopkinsunderfloorheating.co.uk