class_docstr: This version of opensubtitles creates half of all possible dialog examples.
class_docstr_tok: ["This","version","of","opensubtitles","creates","half","of","all","possible","dialog","examples","."]
code: def setup_data(self, path):
      for entry, new in super().setup_data(path):
          # check that the label is present, else skip this example
          if entry[1]:
              yield entry, new
  
imports: from parlai.core.teachers import FbDeprecatedDialogTeacher
  from .build_2009 import build
  from .build_2018 import build
  import copy
  import os
label_desc: Use image node_id 2 for calling the HalfTeacher obj's underlying member method code with example usage: obj.setup_data(path) without return types