About: http://webisa.webdatacommons.org/170901571

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 corners can be classified into four types of corners, which are encoded differently: third corners, moving corners, updated corners, and split corners.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com