Question: who was the author of the book entitled mudrarakshasa
[{'answer': 'Vishakhadatta', 'provenance': [{'wikipedia_id': '6693596', 'title': 'Mudrarakshasa', 'start_paragraph_id': 1, 'start_character': 102, 'end_paragraph_id': 1, 'end_character': 115, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6693596', 'title': 'Mudrarakshasa', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 337, 'bleu_score': 0.611781595065168, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10025703062205587639}, 'section': 'Section::::Abstract.'}]}]