<http://webisa.webdatacommons.org/prov/30384977>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/170144344> .
<http://webisa.webdatacommons.org/170144344>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/231896874>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/170144344> .
<http://webisa.webdatacommons.org/170144344>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<icis.com> .
<http://webisa.webdatacommons.org/170144344>	<http://www.w3.org/ns/prov#value>	"The shale revolution in North America is exposing the production economics of ethylene and products such as polyethylene (PE) and polyvinyl chloride (PVC)." .