code: def _has_abstract(example: Dict[Text, Any]) -> bool:
      abstract = example[_ABSTRACT]
      return abstract and abstract.lower() != "unknown"
  
file_path: datasets/tensorflow_datasets/summarization/covid19sum.py
imports: from __future__ import annotations
  import json
  import os
  from typing import Any, Dict, Iterator, List, Optional, Text, Tuple
  import numpy
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling a global function with example usage: _has_abstract(example) and returns: unknown