About: http://webisa.webdatacommons.org/224338019

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	heat exchanger is a flue-gas / boiler-water heat exchanger; in some cases (some oil
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com