Question: what song does carrie underwood sing with keith urban
[{'answer': "`` The Fighter ''"}, {'provenance': [{'wikipedia_id': '51032008', 'title': 'The Fighter (Keith Urban song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 297, 'bleu_score': 0.762570589834194, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12711692655357659614}, 'section': 'Section::::Abstract.'}]}]