Question: when was the song que sera sera written
[{'answer': 'first published in 1956', 'provenance': [{'wikipedia_id': '2127798', 'title': 'Que Sera, Sera (Whatever Will Be, Will Be)', 'start_paragraph_id': 1, 'start_character': 116, 'end_paragraph_id': 1, 'end_character': 139, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]