<http://webisa.webdatacommons.org/prov/58095806>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/261091862> .
<http://webisa.webdatacommons.org/261091862>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/261091862>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<drillingcontractor.org> .
<http://webisa.webdatacommons.org/prov/344841010>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/261091862> .
<http://webisa.webdatacommons.org/261091862>	<http://www.w3.org/ns/prov#value>	"To document all substances in work areas, including all chemicals and products except medicines, foodstuffs and stationery materials such as paper, pens and marking inks." .