<http://webisa.webdatacommons.org/prov/136534585>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/96309901> .
<http://webisa.webdatacommons.org/96309901>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/96309901>	<http://www.w3.org/ns/prov#value>	"Magnesia is produced by mining and processing mainly the hard rock mineral, magnesite, which occurs in two main forms: cryptocrystalline and crystalline." .
<http://webisa.webdatacommons.org/96309901>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<indmin.com> .