# File lib/rdf/redland/convert_owl.rb, line 40
  def property_type(prop)
    owl_object = false
    @model.find(prop,RDFS_RANGE,nil){|s,p,o|
      if o.resource?
        return OWL_OBJECT_PROPERTY
      end
    }
    return OWL_DATATYPE_PROPERTY
  end