chunk_content:  also need to write a function to:
  Map each token to their respective word with the word_ids method.
  Ignore the special tokens by setting them to -100.
  Label the first token of a given entity.
  
  
  	Copied
  def tokenize_and_align_labels(examples):
      tokenized_inputs = tokenizer(examples["tokens"], truncation=True, is_split_into_words=True)
  
      labels = []
      for i, label in enumerate(examples[f"tags"]):
          word_ids = tokenized_inputs.word_