code: def mostly_underscores(filename):
      """
      Certain treebanks have proprietary data, so the text is hidden
  
      For example:
        UD_Arabic-NYUAD
        UD_English-ESL
        UD_English-GUMReddit
        UD_Hindi_English-HIENCS
        UD_Japanese-BCCWJ
      """
      underscore_count = 0
      total_count = 0
      for line in open(filename).readlines():
          line = line.strip()
          if not line:
              continue
          if line.startswith("#"):
              continue
          total_count = total_count + 1
          pieces = line.split("\t")
          if pieces[1] in ("_", "-"):
              underscore_count = underscore_count + 1
      return underscore_count / total_count > 0.5
  
imports: import argparse
  from enum import Enum
  import glob
  import logging
  import os
  import re
  import subprocess
  import sys
  from stanza.models.common.short_name_to_treebank import canonical_treebank_name
  import stanza.utils.datasets.prepare_tokenizer_data
  import stanza.utils.default_paths
label_desc: Use image node_id 10 for calling a global function with example usage: mostly_underscores(filename) and returns: unknown