About: http://webisa.webdatacommons.org/278577435

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	It looked easy and foolproof to me--assuming no one makes a typo or other mistake, but other sanity checks are just as vulnerable to those problems.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org