Question: when was penicillin first used on a large scale basis
[{'answer': '1942', 'provenance': [{'wikipedia_id': '23312', 'title': 'Penicillin', 'start_paragraph_id': 3, 'start_character': 120, 'end_paragraph_id': 3, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23312', 'title': 'Penicillin', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 367, 'bleu_score': 0.957870874785216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3913114661080968277}, 'section': 'Section::::Abstract.'}]}]