Question: when was deep in the heart of texas written
[{'answer': '1941', 'provenance': [{'wikipedia_id': '4168755', 'title': 'Deep in the Heart of Texas', 'start_paragraph_id': 2, 'start_character': 4, 'end_paragraph_id': 2, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]