About: http://webisa.webdatacommons.org/109737896

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	TED are a brand, and though I have not seen a TED contract I would imagine they are not compelled to post video of every talk that is hosted under their banner.
http://www.w3.org/ns/prov#wasQuotedFrom	dailygrail.com