About: http://webisa.webdatacommons.org/375665589

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They are used to check metals, plastics and ceramic materials for discontinuities, such as cracks, inclusions, blowholes and other material flaws.
http://www.w3.org/ns/prov#wasQuotedFrom	globalspec.com