About: http://webisa.webdatacommons.org/24689372

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	For example, using a bed medium containing soluble forms of calcium or magnesium (e.g., limestone) is beneficial to neutralize wastewater with an acid pH (acid mine drainage).
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com