fixed list vs set issue
fixed list vs set issue

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