@prefix owl: <http://www.w3.org/2002/07/owl#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix : <foo://bla/meta#>.      @prefix p: <foo://bla/persons/>.
p:kate :name "Kate"; :hasChild p:john.
p:john :name "John"; :hasChild p:alice.
p:alice :name "Alice".
:Parent a owl:Class; owl:equivalentClass
 [ a owl:Restriction; owl:onProperty :hasChild; owl:minCardinality 1].
:Grandparent owl:equivalentClass
 [a owl:Restriction; owl:onProperty :hasChild; owl:someValuesFrom :Parent].