Question: briefly describe the shape of the bacterium that causes cholera
[{'answer': 'comma - shaped', 'provenance': [{'wikipedia_id': '52080', 'title': 'Vibrio cholerae', 'start_paragraph_id': 3, 'start_character': 35, 'end_paragraph_id': 3, 'end_character': 48, 'bleu_score': 1.0, 'section': 'Section::::Characteristics.\n'}]}, {'provenance': [{'wikipedia_id': '52080', 'title': 'Vibrio cholerae', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 715, 'bleu_score': 0.930928093778949, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 648569939729027253}, 'section': 'Section::::Abstract.'}]}]