Question: who sings with kenny chesney when the sun goes down
[{'answer': 'Uncle Kracker .', 'provenance': [{'wikipedia_id': '13153940', 'title': 'When the Sun Goes Down (Kenny Chesney song)', 'start_paragraph_id': 1, 'start_character': 133, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13153940', 'title': 'When the Sun Goes Down (Kenny Chesney song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 555, 'bleu_score': 0.8397432800609901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1126854613446633205}, 'section': 'Section::::Abstract.'}]}]