Question: what theme park is national lampoon's vacation filmed at
[{'answer': 'Six Flags Magic Mountain', 'provenance': [{'wikipedia_id': '511622', 'title': "National Lampoon's Vacation", 'start_paragraph_id': 31, 'start_character': 103, 'end_paragraph_id': 31, 'end_character': 127, 'bleu_score': 1.0, 'section': 'Section::::Production.:Walley World.\n'}]}, {'provenance': [{'wikipedia_id': '511622', 'title': "National Lampoon's Vacation", 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 500, 'bleu_score': 0.9103649657979781, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10459971255486939913}, 'section': 'Section::::Production.:Walley World.\n'}]}]