Question: who plays todd in national lampoon's christmas vacation
[{'answer': 'Nicholas Guest', 'provenance': [{'wikipedia_id': '1125221', 'title': "National Lampoon's Christmas Vacation", 'start_paragraph_id': 25, 'start_character': 12, 'end_paragraph_id': 25, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '1125221', 'title': "National Lampoon's Christmas Vacation", 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 42, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9100183987011937924}, 'section': 'Section::::Cast.\n'}]}]