Question: who plays the aunt in national lampoon's vacation
[{'answer': 'Imogene Coca', 'provenance': [{'wikipedia_id': '511622', 'title': "National Lampoon's Vacation", 'start_paragraph_id': 1, 'start_character': 232, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '511622', 'title': "National Lampoon's Vacation", 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 37, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11593139945485533159}, 'section': 'Section::::Cast.\n'}]}]