About: http://webisa.webdatacommons.org/279077758

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	Some embodiments may employ coatings and/or optical filters such as one or more diffraction gratings to enhance the appearance of optical characteristics indicative of fatigue, cracks, strain, stress or other deterioration.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es