Question: when was yes we have no bananas written
[{'answer': 'July 19 , 1923', 'provenance': [{'wikipedia_id': '6820918', 'title': 'Yes! We Have No Bananas', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6820918', 'title': 'Yes! We Have No Bananas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 526, 'bleu_score': 0.979484453366057, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12776704383670118808}, 'section': 'Section::::Abstract.'}]}]