About: http://webisa.webdatacommons.org/53781110

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	For a type of base type at-- unmb, this field points to the block table marker for the objector structure field whose type is the union of which this field is a member, or if the union is anonymous is the immediate enclosing structure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com