ex:cromosomes a rdf:Property;
              rdfs:domain ex:Eukaryote;
              rdfs:range xsd:integer.

ex:unicellular a rdf:Property;
               rdfs:domain ex:Eukaryote;
               rdfs:range xsd:bool;

ex:dateOfBirth a rdf:Property;
               rdfs:domain ex:Mammal;
               rdfs:range xsd:dateTime;
