Question: when did the song magnet and steel come out
[{'answer': 'May 1978', 'provenance': [{'wikipedia_id': '9129114', 'title': 'Magnet and Steel', 'start_paragraph_id': 1, 'start_character': 85, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9129114', 'title': 'Magnet and Steel', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 289, 'bleu_score': 0.963949056609222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 398969257124459032}, 'section': 'Section::::Abstract.'}]}]