code: def prepare_data():
      target_col = "text"
      texts = [
          "Think rich look poor",
          "When you come to a roadblock, take a detour",
          "When it is dark enough, you can see the stars",
          "Never let your memories be greater than your dreams",
          "Victory is sweetest when you’ve known defeat",
      ]
      return pd.DataFrame({target_col: texts})
  
file_path: nlplot/tests/test_nlplot.py
imports: import pandas
  import pytest
  from nlplot import NLPlot, get_colorpalette, generate_freq_df
label_desc: Use image node_id 1 for calling a global function with example usage: prepare_data() and returns: pd