About: http://webisa.webdatacommons.org/382071713

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	Of course there are Internet companies now doing Upfronts and I think in some cases, for some key, finite inventory such as homepages and high profile ecommerce inventory, these can make sense.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com