code: def read_constituency_file(filename):
      with open(filename, encoding="utf-8") as fin:
          return read_constituency_sentences(fin)
  
imports: from collections import defaultdict, deque, namedtuple
  import itertools
  import os
  import re
  import sys
  from tqdm import tqdm
  from stanza.models.constituency.tree_reader import read_trees, UnclosedTreeError, ExtraCloseTreeError
  from stanza.server import tsurgeon
  from stanza.utils.conll import CoNLL
  from stanza.utils.datasets.constituency.utils import SHARDS, write_dataset
  import stanza.utils.default_paths
label_desc: Use image node_id 2 for calling a global function with example usage: read_constituency_file(filename) and returns: read_constituency_sentences