<http://webisa.webdatacommons.org/prov/106181418>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/278754120> .
<http://webisa.webdatacommons.org/278754120>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/prov/454987692>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/278754120> .
<http://webisa.webdatacommons.org/278754120>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/278754120>	<http://www.w3.org/ns/prov#value>	"that can force materials, such as steel (casing), cement and rock" .
<http://webisa.webdatacommons.org/prov/104275846>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/278754120> .