<http://webisa.webdatacommons.org/prov/34116403>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/235933165> .
<http://webisa.webdatacommons.org/235933165>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/235933165>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<corrosionist.com> .
<http://webisa.webdatacommons.org/235933165>	<http://www.w3.org/ns/prov#value>	"Calcium is an alkaline earth metal soft, gray, used as a reducing agent in mining extraction of thorium, uranium and zirconium." .