Question: when was penicillin discovered as a cure for syphilis
[{'answer': 'in 1943', 'provenance': [{'wikipedia_id': '32131310', 'title': 'History of syphilis', 'start_paragraph_id': 1, 'start_character': 614, 'end_paragraph_id': 1, 'end_character': 621, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32131310', 'title': 'History of syphilis', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 621, 'bleu_score': 0.944515869221328, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9585824069736138154}, 'section': 'Section::::Abstract.'}]}]