Question: when was the last debutantes presented at court
[{'answer': '1958', 'provenance': [{'wikipedia_id': '885960', 'title': 'Debutante', 'start_paragraph_id': 11, 'start_character': 70, 'end_paragraph_id': 11, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::United Kingdom.\n'}]}, {'provenance': [{'wikipedia_id': '885960', 'title': 'Debutante', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 526, 'bleu_score': 0.976043556018343, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18127955368606624953}, 'section': 'Section::::United Kingdom.\n'}]}]