Question: when did the first cake mix come out
[{'answer': 'During the Great Depression', 'provenance': [{'wikipedia_id': '57572', 'title': 'Cake', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::History.:Cake mixes.\n'}]}, {'provenance': [{'wikipedia_id': '57572', 'title': 'Cake', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 422, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13168054171811574796}, 'section': 'Section::::History.:Cake mixes.\n'}]}]