def startGraph(self):
        """Starts RDF graph and bing namespaces"""
        g = r.Graph()
        g.namespace_manager.bind("rdf", r.namespace.RDF)    
        g.namespace_manager.bind("foaf", r.namespace.FOAF)    
        g.namespace_manager.bind("xsd", r.namespace.XSD)    
        g.namespace_manager.bind("opa", "http://purl.org/socialparticipation/opa/")    
        g.namespace_manager.bind("ops", "http://purl.org/socialparticipation/ops/")    
        g.namespace_manager.bind("wsg", "http://www.w3.org/2003/01/geo/wgs84_pos#")    
        g.namespace_manager.bind("dc2", "http://purl.org/dc/elements/1.1/")    
        g.namespace_manager.bind("dc", "http://purl.org/dc/terms/")    
        g.namespace_manager.bind("sioc", "http://rdfs.org/sioc/ns#")    
        g.namespace_manager.bind("tsioc", "http://rdfs.org/sioc/types#")    
        g.namespace_manager.bind("schema", "http://schema.org/")
        g.namespace_manager.bind("part", "http://participa.br/")
        self.g=g
Starts RDF graph and bing namespaces