About: http://webisa.webdatacommons.org/135972546

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	Yes, some PPC systems such as AdWords and Microsoft AdCenter have built in checks to prevent dumb user errors, but they???re not bullet proof.
http://www.w3.org/ns/prov#wasQuotedFrom	ask-kalena.com