rdf('_:Description1', rdf:type, 'http://www.mytypes.org/schema/Bicycle').
rdf('_:Description1', wheels, literal('2')).
rdf('_:Description2', rdf:type, 'http://www.mytypes.org/schema/Bicycle').
rdf('_:Description2', 'http://www.mytypes.org/schema/':wheels, literal('2')).
