Question: who baked cake on cover of let it bleed
[{'answer': 'cookery writer Delia Smith', 'provenance': [{'wikipedia_id': '603257', 'title': 'Let It Bleed', 'start_paragraph_id': 16, 'start_character': 514, 'end_paragraph_id': 16, 'end_character': 540, 'bleu_score': 1.0, 'section': 'Section::::Packaging.\n'}]}, {'provenance': [{'wikipedia_id': '603257', 'title': 'Let It Bleed', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 721, 'bleu_score': 0.9715310075018411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15600772368163733825}, 'section': 'Section::::Packaging.\n'}]}]