Question: who played violin with elo in hyde park
[{'answer': 'Chereene Allen', 'provenance': [{'wikipedia_id': '48641957', 'title': "Jeff Lynne's ELO: Live in Hyde Park", 'start_paragraph_id': 28, 'start_character': 12, 'end_paragraph_id': 28, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Personnel.\n'}]}]