About: http://webisa.webdatacommons.org/179043623

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	The downside of this model, of course, is that measuring whether people saw your ads or paid attention to them or acted on them is nigh impossible.
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com