<http://webisa.webdatacommons.org/213960767>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/302440912>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/213960767> .
<http://webisa.webdatacommons.org/213960767>	<http://www.w3.org/ns/prov#value>	"Certain prior art devices use a hammer affect in attempts to drill through a medium such as rock or the like." .
<http://webisa.webdatacommons.org/prov/306336859>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/213960767> .
<http://webisa.webdatacommons.org/213960767>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .