About: http://webisa.webdatacommons.org/364079056

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	Each of these techniques have their trade-offs in terms of ineffectiveness, e.g. high cost, high usage of system resources, incorrectly rejecting legitimate emails, not rejecting all spam, and other drawbacks.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com