@prefix : <foo:bla#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
:Sillyclass1 owl:onProperty :hasChild.
:Sillyclass2 owl:onProperty :hasChild.
:Sillyclass3 owl:equivalentClass [a owl:Restriction; owl:onProperty :hasChild;  owl:someValuesFrom :Male].
:Sillyclass4 a owl:Restriction; owl:onProperty :hasChild;  owl:someValuesFrom :Male.
:bob a :Male.