Question: who wrote the song en mi viejo san juan
[{'answer': 'Noel Epinanio Estrada Suárez', 'provenance': [{'wikipedia_id': '899395', 'title': 'Noel Estrada', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '899395', 'title': 'Noel Estrada', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 174, 'bleu_score': 0.9383861709333501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6022292566442191250}, 'section': 'Section::::Abstract.'}]}]