Question: when were the first antibiotics used to treat diseases
[{'answer': '1942', 'provenance': [{'wikipedia_id': '1805', 'title': 'Antibiotic', 'start_paragraph_id': 62, 'start_character': 108, 'end_paragraph_id': 62, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::History.:Penicillin and other natural antibiotics.\n'}]}, {'provenance': [{'wikipedia_id': '1805', 'title': 'Antibiotic', 'start_paragraph_id': 62, 'start_character': 0, 'end_paragraph_id': 62, 'end_character': 1035, 'bleu_score': 0.986969988197764, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9736199317385638417}, 'section': 'Section::::History.:Penicillin and other natural antibiotics.\n'}]}]