code: def register_all(self, sentences):
      for memory in self.memories:
          memory.register_all(sentences)
  
imports: import collections
  import json
  import os
  import numpy
  import six
  import chainer
  from chainer import backend
  import chainer.functions
  from chainer import initializers
  import chainer.links
  import babi
label_desc: Use image node_id 3 for calling the MemNN obj's underlying member method code with example usage: obj.register_all(sentences) without return types