http://purl.org/spar/fabio/BookSet leaf node

@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix vann: <http://purl.org/vocab/vann/> .
@prefix vs: <http://www.w3.org/2003/06/sw-vocab-status/ns#> .

<http://purl.org/spar/fabio/BookSet> a owl:Class ;
    rdfs:label "book set"@en ;
    vann:example """
        :my-book-set a fabio:BookSet ;
            dcterms:title 'The Lord of the Rings (Boxed Set)'@en ;
            frbr:part :my-book, :my-another-book, :my-even-another-book ;
            dcterms:description 'A finite collection of books published together as a single unit or boxed set.'@en .
    """ ;
    rdfs:comment "A set of books having certain characteristics in common that informally allow their identification together as a group - for instance, the books of The Lord of the Rings saga."@en ;
    rdfs:isDefinedBy <http://purl.org/spar/fabio/> ;
    rdfs:subClassOf [ a owl:Restriction ;
            owl:onProperty <http://purl.org/vocab/frbr/core#part> ;
            owl:someValuesFrom <http://purl.org/spar/fabio/Book> ],
        <http://purl.org/spar/fabio/ExpressionCollection> ;
    vs:term_status <http://purl.org/linked-data/registry#statusStable> .