About: http://webisa.webdatacommons.org/17417115

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	Air in heating systems also leads to cor-rosion of pipes, pumps, and other equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net