About: http://webisa.webdatacommons.org/15841810

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	2) The PDF files can be converted to image files such as JPGs which are not searchable.
http://www.w3.org/ns/prov#wasQuotedFrom	pbs.org