About: http://webisa.webdatacommons.org/175110532

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	Actually, the guidelines do become very liberal here though and the word essential can mean almost anything you like, including circumstances where a font the developer wants to use isn???t available.
http://www.w3.org/ns/prov#wasQuotedFrom	accessibleweb.eu