code: def __init__(
      self, index, mentions, representative_text, representative_index
  ):
      self.index = index
      self.mentions = mentions
      self.representative_text = representative_text
      self.representative_index = representative_index
  
label_desc: Use image node_id 1 to create a new CorefChain object  with example: obj = CorefChain(index, mentions, representative_text, representative_index)