To associate a Language to a Resource or BusinessObject. A
controlled vocabulary based on BCP 47 is recommended. This property can also be used to
identify the presence of sign language (RFC 5646). By inheritance, the hasLanguage
property applies indifferently at the MediaResource / Fragment / Track levels at which the
usage is being defined. Best practice recommends to use to best possible level of
granularity fo describe the usage of language within a MediaResource including at Fragment
and Track levels.