Question: who sang since you've been gone by rainbow
[{'answer': 'Graham Bonnet', 'provenance': [{'wikipedia_id': '2303687', 'title': 'Since You Been Gone', 'start_paragraph_id': 4, 'start_character': 47, 'end_paragraph_id': 4, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Cover versions.\n'}]}, {'provenance': [{'wikipedia_id': '2303687', 'title': 'Since You Been Gone', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 295, 'bleu_score': 0.963949056609222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11993361373833346133}, 'section': 'Section::::Cover versions.\n'}]}]