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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _read_annotations(self, graph):
 """ Find any non-defined elements at TopLevel and create annotations """

        flipped_namespaces = {v: k for k, v in self._namespaces.items()}
        for triple in graph.triples((None, RDF.type, None)):
            namespace, obj = split_uri(triple[2])
            prefix = flipped_namespaces[namespace]
            as_string = '{}:{}'.format(prefix, obj)
            if as_string not in VALID_ENTITIES:
                identity = triple[0]
                gt = self._get_rdf_identified(graph, identity)
                q_name = QName(namespace=namespace, local_name=obj, prefix=prefix)
                gt['rdf_type'] = q_name
                gt_obj = GenericTopLevel(**gt)
                self._annotations[identity.toPython()] = gt_obj
                self._collection_store[identity.toPython()] = gt_obj