def rename_annotations(self, sentence):
        """Function that renames and restructures clause information."""
        annotations = []
        for token in sentence:
            data = {CLAUSE_IDX: token[CLAUSE_IDX]}
            if CLAUSE_ANNOT in token:
                if 'KINDEL_PIIR' in token[CLAUSE_ANNOT]:
                    data[CLAUSE_ANNOTATION] = CLAUSE_BOUNDARY
                elif 'KIILU_ALGUS' in token[CLAUSE_ANNOT]:
                    data[CLAUSE_ANNOTATION] = EMBEDDED_CLAUSE_START
                elif 'KIILU_LOPP' in token[CLAUSE_ANNOT]:
                    data[CLAUSE_ANNOTATION] = EMBEDDED_CLAUSE_END
            annotations.append(data)
        return annotations
Function that renames and restructures clause information.