Question: who sang i should have been a cowboy
[{'answer': 'Toby Keith', 'provenance': [{'wikipedia_id': '12316817', 'title': "Should've Been a Cowboy", 'start_paragraph_id': 1, 'start_character': 90, 'end_paragraph_id': 1, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12316817', 'title': "Should've Been a Cowboy", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 425, 'bleu_score': 0.942340155314736, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16744852568824833653}, 'section': 'Section::::Abstract.'}]}]