code: def test_load_column_format(self):
      corpus = WSCorpus()
      corpus.load(self.folder, "COLUMN")
      self.assertEqual(1561, len(corpus.documents[0].sentences))
      self.assertGreater(len(corpus.documents[0].sentences[0]), 0)
  
file_path: underthesea/tests/corpus/test_ws.py
imports: from os.path import dirname, join
  from unittest import TestCase
  from underthesea.corpus.ws_corpus import WSCorpus
label_desc: Use image node_id 2 for calling the TestWSCorpus obj's underlying member method code with example usage: obj.test_load_column_format() without return types