Question: who was the first person to sing amarillo by morning
[{'answer': 'Terry Stafford', 'provenance': [{'wikipedia_id': '13977564', 'title': 'Amarillo by Morning (song)', 'start_paragraph_id': 1, 'start_character': 57, 'end_paragraph_id': 1, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13977564', 'title': 'Amarillo by Morning (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 212, 'bleu_score': 0.9451524926983921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13273691755889832646}, 'section': 'Section::::Abstract.'}]}]