<http://webisa.webdatacommons.org/18914404>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<abovetopsecret.com> .
<http://webisa.webdatacommons.org/18914404>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/18914404>	<http://www.w3.org/ns/prov#value>	"given the magnetic nature of such materials as granite, the increase in quarrying such materials and their use in buildings...all these factors may" .
<http://webisa.webdatacommons.org/prov/49311354>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/18914404> .