code: def get_edit_type(word, lemma):
      """Calculate edit types."""
      if lemma == word:
          return "identity"
      elif lemma == word.lower():
          return "lower"
      return "none"
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_edit_type(word, lemma) and returns: str, str, str