code: def process_sync_node(
      node,
      sentences,
      sync_waiting,
      has_speech,
      concept_open,
      task,
      n,
      time,
      time_end,
  ):
      """
      Parse sync nodes from the xml files of MEDIA.
  
      Arguments
      ---------
      node: Node
          Node of the xml file.
      sentences: dictionnary of str
          All sentences being extracted from the turn.
      sync_waiting: bool
          Used to keep track of sync nodes, to cut blank audio signal.
          True if a sync node has been processed without text in it.
          False if no sync nodes have been processed, or text has been parsed after one.
      has_speech: bool
          Used to keep track of the existency of speech in the turn's sentence.
          True if speech is present in the turn.
          False if no speech is present yet in the turn.
      concept_open: bool
          Used to know if a concept has been used but not its closing tag ">".
          True if closing tag not seen yet and concept has been used.
          False if clossing tag put or concept not used.
      task: str, optional
          Either 'slu' or 'asr'.
          'slu' Parse SLU data.
          'asr' Parse ASR data.
      n: int
          Used to keep track of the number of sentences in the turn.
      time: str
          Current time given by the sync node.
      time_end: str
          Last time given by the turn, after last speech.
  
      Returns
      -------
      dictionnary of str, bool, bool, str, int
      """
  
      # If the segment has no speech yet
      if not (has_speech):
          # Change time_beg for the last segment
          sentences[n][2] = node.getAttribute("time")
      # If the segment has speech and sync doesn't cut a concept
      elif task == "asr" or (task == "slu" and not concept_open):
          # Change time_end for the last segment
          sentences[n][3] = node.getAttribute("time")
          sentences.append(["", "", sentences[n][3], time_end])
          has_speech = False
          n += 1
      else:
          sync_waiting = True
          time = node.getAttribute("time")
      return sentences, has_speech, sync_waiting, time, n
  
imports: import xml.dom.minidom
  from tqdm import tqdm
  import logging
  import subprocess
  import csv
  import os
  import glob
  import re
label_desc: Use image node_id 9 for calling a global function with example usage: process_sync_node(node, sentences, sync_waiting, has_speech, concept_open, task, n, time, time_end) and returns: sentences,  has_speech,  sync_waiting,  time,  n