Question: who is the most performed playwright of all time
[{'answer': 'William Shakespeare', 'provenance': [{'wikipedia_id': '32897', 'title': 'William Shakespeare', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32897', 'title': 'William Shakespeare', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 558, 'bleu_score': 0.871187762477408, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8557425166513361825}, 'section': 'Section::::Abstract.'}]}]