@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix owl:  <http://www.w3.org/2002/07/owl#>.
@prefix fx:  <http://sparql.xyz/facade-x/ns/>.
@prefix xyz:  <http://sparql.xyz/facade-x/data/>.
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.

rdf:Property a rdfs:Class .

rdf:type rdf:type rdf:Property .

rdfs:ContainerMembershipProperty rdfs:subClassOf rdf:Property .

fx:root a rdfs:Class .

xsd:int a rdfs:Datatype.
xsd:string a rdfs:Datatype.
xsd:boolean a rdfs:Datatype.
xsd:decimal a rdfs:Datatype.
xsd:float a rdfs:Datatype.
xsd:double a rdfs:Datatype.
xsd:base64Binary a rdfs:Datatype.