fix example code - fixes #346
fix example code - fixes #346

avorio/rdflib,dbs/rdflib,marma/rdflib,yingerj/rdflib,dbs/rdflib,marma/rdflib,armandobs14/rdflib,yingerj/rdflib,dbs/rdflib,RDFLib/rdflib,dbs/rdflib,RDFLib/rdflib,ssssam/rdflib,ssssam/rdflib,ssssam/rdflib,yingerj/rdflib,armandobs14/rdflib,RDFLib/rdflib,RDFLib/rdflib,marma/rdflib,avorio/rdflib,armandobs14/rdflib,avorio/rdflib,yingerj/rdflib,ssssam/rdflib,armandobs14/rdflib,avorio/rdflib,marma/rdflib