About: http://webisa.webdatacommons.org/76593107

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	to compare everyday materials and objects on the basis of their material properties, including hardness... and to relate these properties to everyday use of the materials.
http://www.w3.org/ns/prov#wasQuotedFrom	ukrigs.org.uk