# generic prefixes
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix xsd: <http://www.w3.org/2001/XMLSchema#>

# bsfs prefixes
prefix bsfs: <https://schema.bsfs.io/core/>
prefix bsl: <https://schema.bsfs.io/core/Literal/>
prefix bsn: <https://schema.bsfs.io/core/Node#>

# literals
bsl:Number rdfs:subClassOf bsfs:Literal .
xsd:float rdfs:subClassOf bsl:Number .

# predicates
bsn:t_created rdfs:subClassOf bsfs:Predicate ;
    rdfs:domain bsfs:Node ;
    rdfs:range xsd:float ;
    bsfs:unique "true"^^xsd:boolean .