# File lib/rdf/redland/convert_owl.rb, line 13
  def convert_classes()
    todelete = []
    @model.find(nil,TYPE,RDFS_CLASS) {|s,p,o|
      #log("found class #{s}:#{p}:#{o}")
      @model.add(s,p,OWL_CLASS)
      todelete << Statement.new(s,p,o)
log("Converted rdfs:Class #{s} into owl:Class")
    }
    todelete.each{|st| @model.delete_statement(st)}
    
    
  end