@prefix : <foo://bla/names#>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
 [ :name "John";  :age 35;
   :child [:name "Alice"; :age 10], [:name "Bob"; :age 8], [:age 12 ]].
:OneChildParent  owl:equivalentClass [rdf:type owl:Restriction;
  owl:onProperty :child; owl:cardinality 1].
:TwoChildrenParent  owl:equivalentClass [rdf:type owl:Restriction;
  owl:onProperty :child; owl:cardinality 2].
:ThreeChildrenParent  owl:equivalentClass [rdf:type owl:Restriction;
  owl:onProperty :child; owl:minCardinality 3].
:age rdf:type owl:FunctionalProperty.