Question: how many spectators could the circus maximus hold
[{'answer': 'over 150,000', 'provenance': [{'wikipedia_id': '37328', 'title': 'Circus Maximus', 'start_paragraph_id': 1, 'start_character': 378, 'end_paragraph_id': 1, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '37328', 'title': 'Circus Maximus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 523, 'bleu_score': 0.861763119473789, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16651286779614270415}, 'section': 'Section::::Abstract.'}]}]