message: Fixing the documentation of the parse_sequence_example function.
diff: @@ -981,9 +981,10 @@ def parse_sequence_example(serialized,
  name: A name for this operation (optional).
  Returns:
  - A tuple of two `dict`s, each mapping keys to `Tensor`s and `SparseTensor`s.
  - The first dict contains the context key/values.
  - The second dict contains the feature_list key/values.
  + A tuple of three `dict`s, each mapping keys to `Tensor`s and
  + `SparseTensor`s. The first dict contains the context key/values,
  + the second dict contains the feature_list key/values, and the final dict
  + contains the lengths of any dense feature_list features.
  Raises:
  ValueError: if any feature is invalid.
  