Question: when was the song as time goes by written
[{'answer': '1931', 'provenance': [{'wikipedia_id': '3319088', 'title': 'As Time Goes By (song)', 'start_paragraph_id': 1, 'start_character': 57, 'end_paragraph_id': 1, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3319088', 'title': 'As Time Goes By (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 471, 'bleu_score': 0.800616049699433, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7125659432320931357}, 'section': 'Section::::Abstract.'}]}]