Question: who did keke palmer play in grease live
[{'answer': 'Marty Maraschino', 'provenance': [{'wikipedia_id': '42613099', 'title': 'Grease: Live', 'start_paragraph_id': 7, 'start_character': 399, 'end_paragraph_id': 7, 'end_character': 415, 'bleu_score': 1.0, 'section': 'Section::::History.:Announcement and casting.\n'}]}, {'provenance': [{'wikipedia_id': '42613099', 'title': 'Grease: Live', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 889, 'bleu_score': 0.986969988197764, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 422695088347694905}, 'section': 'Section::::History.:Announcement and casting.\n'}]}]