class_docstr: Predict next line of poetry from the last line. From Gutenberg texts.
docstr: Splits of data to produce and number of output shards for each.
code: def dataset_splits(self):
      """Splits of data to produce and number of output shards for each."""
      # 10% evaluation data
      return [
          {
              "split": problem.DatasetSplit.TRAIN,
              "shards": 9,
          },
          {
              "split": problem.DatasetSplit.EVAL,
              "shards": 1,
          },
      ]
  
file_path: tensor2tensor/tensor2tensor/test_data/example_usr_dir/my_submodule.py
imports: import re
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_problems
  from tensor2tensor.layers import common_hparams
  from tensor2tensor.utils import registry
label_desc: Use image node_id 3 for calling the PoetryLines obj's underlying member method code with example usage: obj.dataset_splits() and returns: list