@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
@prefix : <foo://bla/>.
:ParentA owl:intersectionOf (:Person
   [ a owl:Restriction;
     owl:onProperty :hasChild;
     owl:minCardinality 1]).
:ParentB a owl:Restriction;
     owl:onProperty :hasChild;
     owl:minCardinality 1.
# :ParentB rdfs:subClassOf :Person.