class_docstr: A cell from the parse chart formed when performing the CYK algorithm.
  Each cell keeps track of its x and y coordinates (though this will probably
  be discarded), and a list of spans serving as the cell's entries.
class_docstr_tok: ["A","cell","from","the","parse","chart","formed","when","performing","the","CYK","algorithm",".","Each","cell","keeps","track","of","its","x","and","y","coordinates","(","though","this","will","probably","be","discarded",")",",","and","a","list","of","spans","serving","as","the","cell","'s","entries","."]
docstr: :return: A verbose string representation of this ``ChartCell``.
  :rtype: str.
docstr_tok: [":","return",":","A","verbose","string","representation","of","this","``","ChartCell","``",".",":","rtype",":","str","."]
code: def __str__(self):
      """
      :return: A verbose string representation of this ``ChartCell``.
      :rtype: str.
      """
      return "CC[%d,%d]: %s" % (self._x, self._y, self._entries)
  
imports: from collections import defaultdict
  from functools import total_ordering
  from itertools import chain
  from nltk.grammar import DependencyGrammar, DependencyProduction, ProbabilisticDependencyGrammar
  from nltk.internals import raise_unorderable_types
  from nltk.parse.dependencygraph import DependencyGraph
label_desc: Use image node_id 3 for calling the ChartCell obj's underlying member method code with example usage: obj.__str__() and returns: unknown