The namespace name http://www.w3.org/ns/prov# is intended for use with the PROV family of documents that support the interchange of provenance on the web. @en
(2013-06-18) Bernard Vatant: The PROV namespace is shared by a family of ontologies and documents, including some W3C Recommendations as of 2013-04-30, such as PROV-O. The RDF file retrieved from the namespace gathers all elements using this namespace, considered here as a single vocabulary.