About: http://webisa.webdatacommons.org/421672337

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 practice, the system of FIG. 4 can be particularly effectively employed when graphics are printed which have large, highly inked areas.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es