Question: who sings proud to be an american song
[{'answer': 'Lee Greenwood', 'provenance': [{'wikipedia_id': '753329', 'title': 'God Bless the U.S.A.', 'start_paragraph_id': 1, 'start_character': 140, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '753329', 'title': 'God Bless the U.S.A.', 'start_paragraph_id': 1, 'start_character': 63, 'end_paragraph_id': 1, 'end_character': 625, 'bleu_score': 0.9414562321618091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16724101987546161323}, 'section': 'Section::::Abstract.'}]}]