Question: what type of keys have the same tonic but different key signatures
[{'answer': 'parallel keys', 'provenance': [{'wikipedia_id': '427277', 'title': 'Parallel key', 'start_paragraph_id': 1, 'start_character': 78, 'end_paragraph_id': 1, 'end_character': 91, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '427277', 'title': 'Parallel key', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 641, 'bleu_score': 0.983401048538667, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7214841853826192425}, 'section': 'Section::::Abstract.'}]}]