code: def __str__(self) -> str:
      return (
          "CategorizedCorpus: %d train + %d dev + %d test sentences"
          % (
              len(self.train),
              len(self.dev),
              len(self.test),
          )
      )
  
file_path: underthesea/underthesea/corpus/categorized_corpus.py
imports: from pathlib import Path
  from typing import List, Union
  from underthesea.corpus import Corpus
  from underthesea.corpus.data import Sentence
label_desc: Use image node_id 5 for calling the CategorizedCorpus obj's underlying member method code with example usage: obj.__str__() and returns: unknown