Question: when did faded by alan walker come out
[{'answer': '3 December 2015', 'provenance': [{'wikipedia_id': '49031279', 'title': 'Faded (Alan Walker song)', 'start_paragraph_id': 1, 'start_character': 228, 'end_paragraph_id': 1, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]