About: http://webisa.webdatacommons.org/412776179

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	Peek inside the file and determine whether it is a postscript or PDF file -- you can drop it on TextEdit to see its contents.
http://www.w3.org/ns/prov#wasQuotedFrom	macworld.com