About: http://webisa.webdatacommons.org/308617733

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	In another example, content may be retrieved by a computer from an unknown or unreliable source that may contain spam, such as advertisements or junk mail, or viruses, which can be annoying or negatively affect system performance.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com