<http://webisa.webdatacommons.org/prov/12458112>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/318580481> .
<http://webisa.webdatacommons.org/318580481>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/318580481>	<http://www.w3.org/ns/prov#value>	"A sandstone formation contains calcareous constituents, which can include alkaline earth metals, such as calcium and magnesium." .
<http://webisa.webdatacommons.org/318580481>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/34116403>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/318580481> .