Question: identify the author of sanskrit drama abhigyan shakuntalam
[{'answer': 'Kālidāsa', 'provenance': [{'wikipedia_id': '2174235', 'title': 'Shakuntala (play)', 'start_paragraph_id': 1, 'start_character': 214, 'end_paragraph_id': 1, 'end_character': 222, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2174235', 'title': 'Shakuntala (play)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 419, 'bleu_score': 0.7815884756466681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1407525872258987419}, 'section': 'Section::::Abstract.'}]}]