code: def __call__(self, statement_a, statement_b):
      return self.compare(statement_a, statement_b)
  
file_path: ChatterBot/chatterbot/comparisons.py
imports: from chatterbot.exceptions import OptionalDependencyImportError
  from difflib import SequenceMatcher
label_desc: Use image node_id 2 for calling the Comparator obj's underlying member method code with example usage: obj.__call__(statement_a, statement_b) and returns: self