About: http://webisa.webdatacommons.org/133161177

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	Some filesystems such as ext create these blocks in advance when you format the filesystem and leave them unused.
http://www.w3.org/ns/prov#wasQuotedFrom	linuxquestions.org