About: http://webisa.webdatacommons.org/108958094

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	Although not identical to your problems, some folks have received the same sort of error about not being able to delete files they ought to on Western Digital MyBooks, and it seems it was because the filesystem was corrupted.
http://www.w3.org/ns/prov#wasQuotedFrom	linuxquestions.org