Question: who works on the floor of the stock exchange
[{'answer': 'traders', 'provenance': [{'wikipedia_id': '2731946', 'title': 'Open outcry', 'start_paragraph_id': 3, 'start_character': 136, 'end_paragraph_id': 3, 'end_character': 143, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'stockbrokers', 'provenance': [{'wikipedia_id': '2731946', 'title': 'Open outcry', 'start_paragraph_id': 7, 'start_character': 43, 'end_paragraph_id': 7, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2731946', 'title': 'Open outcry', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 498, 'bleu_score': 0.9751504244977051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3035365618159420637}, 'section': 'Section::::History.\n'}]}]