About: http://webisa.webdatacommons.org/429834360

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 know that this happens when RAM becomes saturated, and OS has nowhere else to store data other than the hard disk.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com