About: http://webisa.webdatacommons.org/364163417

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	Hardness ions, such as calcium and magnesium, must be removed from the water supply before it can be used as boiler feedwater.
http://www.w3.org/ns/prov#wasQuotedFrom	gewater.com