About: http://webisa.webdatacommons.org/376299728

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	While the availability of those codecs on open-source terms seemingly ensures compliance with the W3C's requirements, proprietary vendors such as Apple and Microsoft consider the patent situation surrounding such formats unclear.
http://www.w3.org/ns/prov#wasQuotedFrom	fosspatents.com