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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _replace_oov(original_vocab, line):
 """Replace out-of-vocab words with "UNK". This maintains compatibility with published results. Args: original_vocab: a set of strings (The standard vocabulary for the dataset) line: a unicode string - a space-delimited sequence of words. Returns: a unicode string - a space-delimited sequence of words. """

  return u" ".join(
      [word if word in original_vocab else u"UNK" for word in line.split()])