Question: when did the song the fighter come out
[{'answer': '6 February 2017', 'provenance': [{'wikipedia_id': '51032008', 'title': 'The Fighter (Keith Urban song)', 'start_paragraph_id': 1, 'start_character': 163, 'end_paragraph_id': 1, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]