About: http://webisa.webdatacommons.org/218377196

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	There are also web annotation systems which allow to annotate pdf and other documents formats, e.g. A.nnotate, WebNotes.
http://www.w3.org/ns/prov#wasQuotedFrom	thefullwiki.org