About: http://webisa.webdatacommons.org/80084348

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	Generally, hardness is a material characteristic related to the resistance of the material to plastic deformation, usually by indentation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca