About: http://webisa.webdatacommons.org/202131347

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	???Visual defect??? refers to a surface imperfection, such as a hole or merely a non-smooth surface area, or pitting, that can be viewed with or without magnification.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com