About: http://webisa.webdatacommons.org/300250807

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	In this case, VertexPointerType is an enumeration that must be defined in either signatures.xml or overrides.xml.
http://www.w3.org/ns/prov#wasQuotedFrom	opentk.com