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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 get_annotation_entry_names(self, url: str) -> Set[str]: """Return a dict of annotations and their labels for the given annotation file. :param url: the location of the annotation file """

        annotation = self.get_or_create_annotation(url)
        return {
            x.name
            for x in self.session.query(NamespaceEntry.name).filter(NamespaceEntry.namespace == annotation)
        }