Question: who plays guitar for ralph macchio in crossroads
[{'answer': 'Steve Vai', 'provenance': [{'wikipedia_id': '1296482', 'title': 'Crossroads (1986 film)', 'start_paragraph_id': 1, 'start_character': 289, 'end_paragraph_id': 1, 'end_character': 298, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1296482', 'title': 'Crossroads (1986 film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 443, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1886986386952681563}, 'section': 'Section::::Abstract.'}]}]