About: http://webisa.webdatacommons.org/180307518

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	A hollow chamber within the housing stores a heat source, typically a heated liquid such as hot water or a phase-change salt or oil such as a carboxymethylcellulose mixture.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr