has language The language should always be specified by means of appropriate individuals belonging to the class `dcterms:LinguisticSystem`, and its value should be specified according to a standardised language code as specified in RFC 5646 (http://www.ietf.org/rfc/rfc5646.txt). In particular, it is possible to specify the values taken from [IETF BCP 47](https://datatracker.ietf.org/doc/html/rfc5646), ISO 639-1 language codes (e.g., `en`, `it`, and `fr`). The language code can be associated by means of the property `dcterms:description` typed with the `dcterms:RFC5646` datatype. It is possible, of course, to use directly the resources specified in http://lexvo.org/id/iso639-3/ for languages (e.g., http://lexvo.org/id/iso639-3/eng for English), instead of defining new ones. :my-dataset dcterms:language :my-dataset-en . :my-dataset-en a dcterms:LinguisticSystem ; dcterms:description "en"^^dcterms:RFC5646 . A language of the resource.