@prefix : <foo://bla/meta#>.
@prefix p: <foo://bla/persons/>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
:Parent owl:equivalentClass
  [ owl:intersectionOf ( :Person
                        [ a owl:Restriction;
                            owl:onProperty :hasChild;  owl:minCardinality 1 ] ) ] .
:Parent rdfs:subClassOf [ a owl:Restriction;
                            owl:onProperty :hasChild;  owl:allValuesFrom :Person ] .
p:john a :Person; :hasChild p:alice .
p:sue a :Parent .