Question: where was the final scene of grease filmed
[{'answer': 'John Marshall High School', 'provenance': [{'wikipedia_id': '336846', 'title': 'Grease (film)', 'start_paragraph_id': 50, 'start_character': 921, 'end_paragraph_id': 50, 'end_character': 946, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming locations.\n'}]}, {'provenance': [{'wikipedia_id': '336846', 'title': 'Grease (film)', 'start_paragraph_id': 50, 'start_character': 0, 'end_paragraph_id': 50, 'end_character': 1037, 'bleu_score': 0.9682340374756381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16631721425308841541}, 'section': 'Section::::Production.:Filming locations.\n'}]}]