Question: when was la casa de bernarda alba written
[{'answer': 'completed on 19 June 1936', 'provenance': [{'wikipedia_id': '12828996', 'title': 'The House of Bernarda Alba', 'start_paragraph_id': 2, 'start_character': 141, 'end_paragraph_id': 2, 'end_character': 166, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12828996', 'title': 'The House of Bernarda Alba', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 652, 'bleu_score': 0.9826823455989031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17874611808762356654}, 'section': 'Section::::Abstract.'}]}]