Question: who sang so you had a bad day
[{'answer': 'Daniel Powter', 'provenance': [{'wikipedia_id': '4421511', 'title': 'Bad Day (Daniel Powter song)', 'start_paragraph_id': 0, 'start_character': 9, 'end_paragraph_id': 0, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]