Question: what is the name of the special cake eaten in france on 6 january
[{'answer': 'king cake', 'provenance': [{'wikipedia_id': '471952', 'title': 'King cake', 'start_paragraph_id': 1, 'start_character': 2, 'end_paragraph_id': 1, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '471952', 'title': 'King cake', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 814, 'bleu_score': 0.960470563889473, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13386575919168165542}, 'section': 'Section::::History.\n'}]}]