added definition location of OWL datatypes
@@ -116,6 +116,8 @@ class OWL(DefinedNamespace):
versionIRI: URIRef # The property that identifies the version IRI of an ontology.
# http://www.w3.org/2000/01/rdf-schema#Datatype
+ # NOTE: the following two elements don't appear in the OWL RDF documents but are defined in the OWL2 Recommentation
+ # at https://www.w3.org/TR/owl2-syntax/#Datatype_Maps
rational: URIRef # The value space is the set of all rational numbers. The lexical form is numerator '/' denominator, where both are integers.
real: URIRef # The value space is the set of all real numbers. Does not directly provide any lexical forms.
