About: http://webisa.webdatacommons.org/185157738

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	If you name them the same as the pdf, except changing the extension, they would sort right next to the originals and hovering over them would show the thumbnail.
http://www.w3.org/ns/prov#wasQuotedFrom	askubuntu.com