Question: who did dolly parton sing i will always love you for
[{'answer': 'Porter Wagoner', 'provenance': [{'wikipedia_id': '1815726', 'title': 'I Will Always Love You', 'start_paragraph_id': 1, 'start_character': 264, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1815726', 'title': 'I Will Always Love You', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 819, 'bleu_score': 0.9098684817918611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 484668774232932088}, 'section': 'Section::::Background and composition.\n'}]}]