code: def preprocess_text(text: str) -> str:
      text = " ".join(text.split())
      assert "<" not in text and ">" not in text, text
      return text
  
file_path: espnet/egs2/owsm_v2/s2t1/local/prepare_wenetspeech.py
imports: import json
  from argparse import ArgumentParser
  from collections import defaultdict
  from pathlib import Path
  from typing import Dict, List, Optional, Tuple, Union
  from utils import SYMBOL_NA, SYMBOL_NOSPEECH, SYMBOLS_TIME, LongUtterance, Utterance, generate_long_utterances
label_desc: Use image node_id 1 for calling a global function with example usage: preprocess_text(text) and returns: text