code: def test_unequal_replace_field_at_indices(self):
      # test unequal replacement
      replace = mrc_sample.unequal_replace_field_at_indices(
          "context", [2], [["textflint", "software"]]
      )
      self.assertTrue(replace.is_legal())
      self.assertEqual(
          "Super Bowl textflint software was an American football "
          "game to determine the champion "
          "of the National Football League (NFL) for the 2015 season.",
          replace.get_sentences("context")[0],
      )
  
file_path: textflint/test/input/component/sample/test_mrc_sample.py
imports: import unittest
  from textflint.input.component.sample.mrc_sample import MRCSample
label_desc: Use image node_id 6 for calling the TestMRCSample obj's underlying member method code with example usage: obj.test_unequal_replace_field_at_indices() without return types