About: http://webisa.webdatacommons.org/184836726

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	I am having this issue as well, but where do I find this option to uncheck including fonts?............edit..........nevermind, just update to the latest version of Calibre and you will no longer get DRM messages
http://www.w3.org/ns/prov#wasQuotedFrom	adobe.com