About: http://webisa.webdatacommons.org/187521487

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	To the best of my knowledge, one of these approaches (the iframe example listed at http://cookiecrook.com/longdesc/iframe/) works in all major implementations today, which is to say that it is much better supported than longdesc itself.
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org