Question: who was the first known actor to act alone
[{'answer': 'Thespis', 'provenance': [{'wikipedia_id': '52585', 'title': 'Thespis', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52585', 'title': 'Thespis', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 371, 'bleu_score': 0.913394011113522, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12717405339180689865}, 'section': 'Section::::Abstract.'}]}]