Question: when was the name burma changed to myanmar
[{'answer': '1235', 'provenance': [{'wikipedia_id': '2250710', 'title': 'Names of Myanmar', 'start_paragraph_id': 11, 'start_character': 165, 'end_paragraph_id': 11, 'end_character': 169, 'bleu_score': 1.0, 'section': 'Section::::Burmese names.:"Mranma".\n'}]}, {'provenance': [{'wikipedia_id': '2250710', 'title': 'Names of Myanmar', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 631, 'bleu_score': 0.9325666627127971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11554215094924182060}, 'section': 'Section::::Burmese names.:"Mranma".\n'}]}]