About: http://webisa.webdatacommons.org/341222148

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 addition, a unique identifier, such as a serial number, may be assigned to each document and stored in the document's metadata file (shown in FIGS. 4, 5 and 6 as 420, 520, and 620 respectively).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com