About: http://webisa.webdatacommons.org/69443294

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.js was recently made the default way of opening PDFs in Firefox, replacing plug-ins such as Adobe Reader.
http://www.w3.org/ns/prov#wasQuotedFrom	mozilla.org