old_contents: # -*- coding: utf-8 -*-
  from typing import Dict, List, Tuple
  
  
  def chunk_parse(
      sent: List[Tuple[str, str]],
      engine="crf", corpus="orchidpp"
  ) -> List[str]:
      from .crfchunk import CRFchunk
      _engine = CRFchunk()
      return _engine.parse(sent)
  
new_contents: # -*- coding: utf-8 -*-
  from typing import Dict, List, Tuple
  
  
  def chunk_parse(
      sent: List[Tuple[str, str]],
      engine="crf", corpus="orchidpp"
  ) -> List[str]:
      """
      This function parse thai sentence to phrase structure in IOB format.
  
      :param list sent: list [(word,part-of-speech)]
      :param str engine: chunk parse engine (now, it has orchidpp only)
  
      :return: a list of tuple (word,part-of-speech,chunking)
      :rtype: List[str]
      """
      from .crfchunk import CRFchunk
      _engine = CRFchunk()
      return _engine.parse(sent)
  
subject: Add chunk_parse docs