About: http://webisa.webdatacommons.org/310308142

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	The highest surface preferably comprises cube corner elements, although it may also comprise non-retroreflective pyramids, frustums, posts, or other structures.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com