About: http://webisa.webdatacommons.org/35162855

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	Thus, the water usually contains alkylene earth metal cations,primarily calcium and magnesium, and such anions as bicarbonate, carbonate, sulfate, silicate, phosphate, oxalate, fluoride, and so forth.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com