About: http://webisa.webdatacommons.org/129925084

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	PDF is a file format, not a programming language, i.e. flow control commands such as if and loop are removed, while graphics commands such as lineto remain.Often, the PostScript-like PDF code is generated from a source PostScript file.
http://www.w3.org/ns/prov#wasQuotedFrom	reference.com