Question: who is the author of the book romeo and juliet
[{'answer': 'William Shakespeare', 'provenance': [{'wikipedia_id': '25821', 'title': 'Romeo and Juliet', 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25821', 'title': 'Romeo and Juliet', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 380, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7616347225506842010}, 'section': 'Section::::Abstract.'}]}]