code: def compare(self, statement_a, statement_b):
      return 0
  
file_path: ChatterBot/chatterbot/comparisons.py
imports: from chatterbot.exceptions import OptionalDependencyImportError
  from difflib import SequenceMatcher
label_desc: Use image node_id 3 for calling the Comparator obj's underlying member method code with example usage: obj.compare(statement_a, statement_b) and returns: int