minor fixes
minor fixes

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