Question: who sang we could be heroes just for one day
[{'answer': 'David Bowie', 'provenance': [{'wikipedia_id': '16075426', 'title': 'Just for One Day (Heroes)', 'start_paragraph_id': 1, 'start_character': 114, 'end_paragraph_id': 1, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16075426', 'title': 'Just for One Day (Heroes)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 696, 'bleu_score': 0.9844346099707091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2164227696803139805}, 'section': 'Section::::Abstract.'}]}]