code: def _big_ftdf():
      return pd.DataFrame(
          data=[
              ["woof woof", 0],
              ["woof", 0],
              ["howl", 0],
              ["growl", 0],
              ["meow meow", 1],
              ["meow", 1],
              ["prr", 1],
              ["cheezburger", 1],
          ],
          columns=["txt", "lbl"],
      )
  
imports: import pytest
  import pandas
  from sklearn.model_selection import cross_val_score
  from skift import FirstColFtClassifier, IdxBasedFtClassifier, ColLblBasedFtClassifier, FirstObjFtClassifier, SeriesFtClassifier
label_desc: Use image node_id 18 for calling a global function with example usage: _big_ftdf() and returns: pd