class_docstr: A mention (possible anaphor) inherite from spacy Span class with additional informations
docstr: Is the Mention nested in a detected named entity
docstr_tok: ["Is","the","Mention","nested","in","a","detected","named","entity"]
code: def _get_in_entities(self):
      """Is the Mention nested in a detected named entity"""
      return self.entity_label is not None
  
imports: import re
  import io
  from six import string_types, integer_types
  from spacy.tokens import Span, Token
  from neuralcoref.train.compat import unicode_
  from neuralcoref.train.utils import encode_distance, parallel_process
  import spacy
  import numpy
label_desc: Use image node_id 4 for calling the Mention obj's underlying member method code with example usage: obj._get_in_entities() and returns: unknown