code: def load_librispeech_alignment(alignment_filepath: str) -> dict:
      """
      Load alignment data for librispeech
  
      Args:
          alignment_filepath (str): Path to the file containing alignments
      Returns:
          alignments (dict[tuple]): A dictionary containing file index and alignments
      """
      alignments = {}
      with open(alignment_filepath, "r") as fin:
          for line in fin.readlines():
              line = line.strip()
              if not line:
                  continue
              file_id, words, timestamps = line.split()
              alignments[file_id] = (words, timestamps)
      return alignments
  
file_path: NeMo/scripts/speaker_tasks/create_alignment_manifest.py
imports: import argparse
  import os
  import shutil
  from pathlib import Path
  from typing import List
  from nemo.collections.asr.parts.utils.manifest_utils import get_ctm_line, read_manifest, write_ctm, write_manifest
  from nemo.utils import logging
label_desc: Use image node_id 4 for calling a global function with example usage: load_librispeech_alignment(alignment_filepath) and returns: alignments