class_docstr: A container for the nodes and labelled edges of a dependency structure.
code: def _word(self, node, filter=True):
      w = node["word"]
      if filter:
          if w != ",":
              return w
      return w
  
imports: import subprocess
  import warnings
  from collections import defaultdict
  from itertools import chain
  from pprint import pformat
  from nltk.internals import find_binary
  from nltk.tree import Tree
label_desc: Use image node_id 17 for calling the DependencyGraph obj's underlying member method code with example usage: obj._word(node, filter) and returns: w, w