About: http://webisa.webdatacommons.org/141801431

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	when the queued request is serviced if it is estimated or determined that the requested resource will not be available when the first request is serviced.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com