code: def convert_parentheses_back(text: str):
      """Replaces ( and ) tokens with -LRB- and -RRB-"""
      return text.replace("(", "-LRB-").replace(")", "-RRB-")
  
imports: import os
  from typing import List, Optional, Set
  import pandas
  from ludwig.datasets.dataset_config import DatasetConfig
  from ludwig.datasets.loaders.dataset_loader import DatasetLoader
label_desc: Use image node_id 3 for calling a global function with example usage: convert_parentheses_back(text) and returns: text