<http://webisa.webdatacommons.org/232593719>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nps.gov> .
<http://webisa.webdatacommons.org/232593719>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/232593719>	<http://www.w3.org/ns/prov#value>	"A sharp probe or tool, such as an ice pick, can be used to determine the extent of corrosion in the metal." .
<http://webisa.webdatacommons.org/prov/178619420>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/232593719> .