code: def _stem(string, resources):
      return get_stems(resources).get(string, string)
  
file_path: snips-nlu/snips_nlu/preprocessing.py
imports: from __future__ import unicode_literals
  from builtins import object
  from snips_nlu.resources import get_stems
label_desc: Use image node_id 4 for calling a global function with example usage: _stem(string, resources) and returns: get_stems